Mathematics High School

Find cos x and cos y! Please help me out! You don’t need to answer all just what you can :)

Answers

Answer 1

Answer:

7. cos(X) = 3/5 = 0.6

cos(Y) = 4/5 = 0.8

8. cos(X) = 15/17 ≈ 0.8824

cos(Y) = 8/17 ≈ 0.4706

9. cos(X) = 1/2 = 0.5

cos(Y) = (√3)/2 ≈ 0.8660

Step-by-step explanation:

The trigonometric ratio for cosine is given as follows;

[tex]Cos(\theta) = \dfrac{Adjacent\, side \, to\, angle}{Hypothenus\, side \, length \ of\, the \ triangle}[/tex]

7. The adjacent leg length to ∠X = 27

The length of the hypotenuse side of the triangle = 45

∴ cos(X) = 27/45 = 3/5 = 0.6

Cos(X) = 3/5 = 0.6

The adjacent leg length to ∠Y = 36

∴ cos(Y) = 36/45 = 4/5 = 0.8

cos(Y) = 4/5 = 0.8

8. The adjacent leg length to ∠X = 15

The length of the hypotenuse side of the triangle = 17

∴ cos(X) = 15/17 ≈ 0.8824

The adjacent leg length to ∠Y = 8

∴ cos(Y) = 8/17 ≈ 0.4706

9. The adjacent leg length to ∠X = 13

The length of the hypotenuse side of the triangle = 26

∴ cos(X) = 13/26 = 1/2 = 0.5

Cos(X) = 1/2 = 0.5

The adjacent leg length to ∠Y = 13·√3

∴ cos(Y) = 13·√3/26 = (√3)/2 ≈ 0.8660

cos(Y) = (√3)/2 ≈ 0.8660.

Related Questions

OMG HELP MEEEEEEEeeeeeeeeeeeeeeeeeeeeeeeeeeee

Answers

Answer:

Step-by-step explanation:

*6 on both sides

13*6=d/6*6

A whole pizza is cut into 8 pieces and you eat 2 of the 1/8 pieces, how much (in a fraction) is left over? 3/8

4/6

2/8

6/8

Answers

Answer:

6/8 is left

Step-by-step explanation:

Hope this helps!! Can I get brainliest please??? :)

8 pieces = 8/8

8/8 - 1/8 - 1/8 = 6/8

8/8 - 2/8 = 6/8

Rewrite the following expression using the properties of logarithms.

log2 z + 2 log2x + 4 log9 y + 12 log9 x - 2 log2 y

You must show all of your work to receive credit.

Answers

i’m gonna write it & send a picture!!

What is the greatest surface area of a rectangular solid that can be built from 16 identical unit cubes?

Answers

Answer and explanation:

The surface area of a solid is the sum of the areas of all faces of the solid. The surface area of a cube is calculated using the formula 6a² since a cube has 6 faces in total likewise a cuboid.

We can say the rectangular solid is a cuboid and to find the surface area of the cuboid we add up the surface area of all 16 cubes

Surface area is therefore 16×6a²

HELP PLS PLS PLS PLS

Answers

Answer:

7x - x

Step-by-step explanation:

i think so oof oof oof oof oof

The answer is 7+x*x

Gl

A ladder leans against a building. If the ladder reaches 18 feet up the wall and contacts the ground 5 feet from the building, what is the angle formed between the top of the ladder and the building?

Answers

Answer:

I think it is 15 Tan^-1 (5÷18)

6) A circular window on a boat has a diameter of 24
inches. Approximately how much wall space does the
window take up?
A 38 in?
B 75 in?
C 113 in?
D452 in?

Answers

Answer:

452.448in² options D

Step-by-step explanation:

A circular window on a boat has a diameter of 24

inches. Approximately how much wall space does the

window take up?

A 38 in?

B 75 in?

C 113 in?

D452 in?

Given data

D=24 inches

Radius =d/2= 24/2= 12 inches

Area A

A=πr²

Substitute

A=3.142*12²

A=3.142*144

A=452.448in²

Use the table and the graph to answer the questions.

Function 1

x −1 −2 −3

y 4 6.5 9

Function 2

(a) What is the rate of change for each function? Show your work.

(b) Which function has the greater rate of change?

Answers

a) Function A (table): rate of change = 2.5/1 = 2.5

Function B (graph): rate of change= -4/1 = -4

You should use change in y over change in x for the table

For the graph: move 4 down to get to the center (0,0) =-4 and then the same for -1 to 0

b) Function A should have a greater rate of change

**I hope this is right!

Rearrange x= 3g + 2 to make g the subject

Answers

x = 3g + 2
3g + 2 = x
3g = x - 2
g = (x - 2)/3

Answer:

g = 1/3 x - 2/3

Step-by-step explanation:

x =3g + 2

Switch sides:

3g + 2 = x

Take away 2 from both sides:

3g = x - 2

Divide both sides by 3:

g = 1/3 x - 2/3

Please help me with this problem. Best answer will get brainliest!

Answers

Answer:

c=20 e=114 d=46 dec=180

Step-by-step explanation:

y=5

Answer:

m∠C = 32°

m∠D = 82°

m∠DEC = 66°

Step-by-step explanation:

Exterior Angle Theorem says that the degree measure that with an angle forms a straight line (Ex. Angle DEF in the picture) is equal to the sum of the two other angles in the triangle. This means that the measure of angle DEF is equal to the measure of angle DCE plus the measure of angle CDE. This would mean that 9y + 1 + 3y + 5 = 114, meaning that 12y + 6 = 114, which means that 12y = 108, which means that y = 9. If we plug 9 in for all of these values, we get that angle D is 9 * 9 + 1, which is 82 and that angle C is 3 * 9 + 5, which is 32. Next, we know that the sum of angles in a triangle is 180, so we subtract 32 and 82 from 180 to find the measure of angle DEC, and this is 66 degrees.

Can someone help me? I'd greatly appreciate it!

Answers

Answer:

11 because you add all the exponents to find the answer 6+4=10 but since R has no number we assume there is an invisible 1 making it 11 :)

Step-by-step explanation:

CD and CB are tangent to circle A. If CD = 5x – 13 and CB = 12, find x.

Answers

Answer:

Step-by-step explanation:

because 5•5=25 and 25-13=12

please help me stuck

Answers

Answer: 341.4

Step-by-step explanation:

PLEASE HELP! GIVING POINTS :)!

Answers

Answer:

B & E

After like 10 weeks you get 51

7+4=11

11 + 4 = 15

Step-by-step explanation:

A comes out to 127 with an 11, B comes out with a 51 with a 11

C with an 11 is -23, D with an 11 is -71, and E is 51

A pair of corresponding angles is

Answers

They’re called transversal lines

HEEEEELLLLLPPPPP!!!!!!!!!!!

Answers

they are the same angle so it would be 106

Answer:

Step-by-step explanation:

180 minus 106 is equal to 74

Find the least common multiple of the set of numbers
8,9

The least common multiple of 8 and 9 is____?

Answers

Answer:

Step-by-step explanation:

plz mark brainliest :D

Please answer these 3 they are pretty simple tysm will mark brainliest

Answers

7: -69

8: -2+3-4 = -3

9: $ (5y+10)

Please solve this for me

9x+6+45=100

Answers

I hope this helps with your answer

Answer:

9x+6+45=100

Transposing (45) to RHS

= 9x+6=100-45

= 9x6=55

Now, transposing (6) to RHS

= 9x=55-6

= 9x=49

Now, transposing (9) to RHS

= x=49÷9

= x=5.44.....

Therefore, value of x=5.44..............

A certain college enrolled 29,000. It was reported 54 percent were female and 46 percent were male. In addition 61 percent were over the age of 25. How many students were in each category if 30 percent of those over the age if 25 were male

Answers

Answer:

Step-by-step explanation:

Total number of students = 29000

Number of female = 54% of 29000

54/100 x 29000 = 15660 students

Number of male = 46% of 2900

46/100 x 29000= 13340 students

61% of 29000 are over 25 years

61% of 29000= 61/100 x 29000

= 17690 students

Of the pupils over the age of 25, 30% are male

30% of 17690 students are male

30/100 x 7690 =5307 students

The number of females over the age of 25 = 17690 -5307

17690 - 5307 = 12383 female students.

4x + 3y = -26
x-3y =-14

Answers

Answer:

x=-8, y=2

Step-by-step explanation:

Hope I helped!

Please help.
Algebra.

Answers

Answer: The Answer is (A)

Step-by-step explanation: Have a brilliant day mate! - Lily ^-^

Pleaseee I need help it’s a major grade

Answers

Answer: D.

Step-by-step explanation:

48/2.15= d, so 2.15d=48

Given the side length, determine whether the triangle is acute, right, obtuse or not a triangle.

10, 23, 41

A. Acute
B. Right
C. Obtuse
D. Not a triangle

Answers

Since 41 is greater than the sum of the other two sides this is not a triangle.

HELPPP im confused :/

Answers

Answer:

Step-by-step explanation:

The sides correspond with a favor of 1.5

12/8 = 1.5

7.5/5 = 1.5

3/2=1.5

7m - 17 = -24
what is m?

Answers

Answer:

Move all terms that don't contain

to the right side and solve.

Exact Form:

Decimal Form:

¯¯¯¯¯¯¯¯¯¯¯¯

857142

Mixed Number Form:

Tap to view steps...

How do I solve this and what’s the answer? This is due at 11:59 pm on 2/9/21 PLEASE HELP!

Answers

Answer:

I believe the answer is 8.

Select the procedure that can be used to show the converse of the Pythagorean theorem using side lengths chosen from 6 cm, 8 cm, 9 cm, and 13 cm.

A. Knowing that 6^2 + 8^2 = 10^2, draw the 6 cm side and then the 8 cm side with a right angle between them. The 10 cm side will fit to form a right triangle.

B. Knowing that 6^2 + 8^2 > 9^2, draw the 6 cm side and then the 8 cm side with a right angle between them. The 10 cm side will fit to form a right triangle.

C. Knowing that 8^2 + 9^2 does not equal 10^2, draw the 8 cm side, then the 9 cm side with a right angle between them. The 10 cm side will fit to form a right triangle.

D. Knowing that 6^2 + 8^2 = 10^2, draw any two of the side with a right angle between them. The third side will fit to form a right triangle.

Answers

Answer:

A. Knowing that 6^2 + 8^2 = 10^2, draw the 6 cm side and then the 8 cm side with a right angle between them. The 10 cm side will fit to form a right triangle.

Step-by-step explanation:

Answer:

Step-by-step explanation:

credit goes to guy up top

find the geometric mean of 8 and 17

Answers

Oh gosh oh I thought had the president of the

Sarah drinks 30 liters of water on weekdays and 12 liters of water on weekends. How many liters of water does Sarah drink per day?

Answers

Easy, 6

30 divided by 5 equals 6

12 divided by 2 equals 6

Answer:

6 liters per day

Step-by-step explanation:

Hi there!

We know that Sarah drinks 30 liters on weekdays. There are 5 days in a week not including the weekends. You have to divide 30 liters by 5 to get the per day amount. 30 divided by 5 is 6. This means that Sarah drinks 6 liters per day. This is accurate because when you go on to check the amount of water she drinks on weekends, you know there are two days in a weekend, and you know she drinks a total of 12 liters during the weekend, so 6 liters multiplied by those two days is equal to 12.

Really hope this helps :)

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