Solving for Side Lengths of Right Triangles

Question 1

Which equation could be used to solve for the length of XY?

Revolt · Accepted Answer

XY =

Question 2

Which error did Kevin make?

Revolt · Accepted Answer

He has the side lengths in the wrong place in the cosine ratio.

Question 3

A 25-foot long ladder is propped against a wall at an angle of 18° with the wall. Which diagram correctly represents this scenario?

Revolt · Accepted Answer

[Image: A 25 foot ladder is propped against a wall forming...]

Question 4

A 25-foot long ladder is propped against a wall at an angle of 18° with the wall. How high up the wall does the ladder reach? Round the answer to the nearest tenth of a foot.

Revolt · Accepted Answer

23.8 ft

Question 5

Use the diagram to complete the statements.

Revolt · Accepted Answer

The measure of angle L is °.: 70; The trigonometric ratio that uses ∠M and LN to solve for NM is .: tangent; The length of NM, to the nearest tenth, is approximately .: 57.7

Question 6

sinecosine✔ tangent

Revolt · Accepted Answer

✔ tangent

Question 7

7.622.3✔ 57.7

Revolt · Accepted Answer

✔ 57.7

Question 8

X 20✔ 7090

Revolt · Accepted Answer

✔ 70; The trigonometric ratio that uses ∠M and LN to solve for NM is .: tangent; The length of NM, to the nearest tenth, is approximately .: 57.7

Question 9

Which equations could be used to solve for the unknown lengths of △ABC? Check all that apply.

Revolt · Accepted Answer

sin(45°) =; cos(45°) =

Question 10

If Diana walks forward and her angle looking to the top of the building changes to 40°, how much closer is she to the building? Round the answer to the nearest tenth of a foot.

Revolt · Accepted Answer

17.6 ft

Solving for Side Lengths of Right Triangles Answers

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