Answers CR CCSS Math 2 S2 M2960OXSolving for Side Lengths of Right Triangles

Solving for Side Lengths of Right Triangles Answers

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Which relationship in the triangle must be true?

sin(B) = sin(A)

sin(B) = cos(90 – B)

cos(B) = sin(180 – B)

cos(B) = cos(A)

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The equation can be used to determine the length of line segment AC.

11.8 cm

12.9 cm

14.9 cm

15.3 cm

What is the length of ? Round to the nearest tenth.

9.7 m

10.4 m

37.3 m

38.6 m

Which equation can be solved to find one of the missing side lengths in the triangle?

cos(60o) =

cos(60o) =

cos(60o) =

cos(60o) =

Find the length of . Use that length to find the length of .

2.3 cm

4.0 cm

10.7 cm

18.6 cm

A triangle has angles that measure 30o, 60o, and 90o. The hypotenuse of the triangle measures 10 inches.Which is the best estimate for the perimeter of the triangle? Round to the nearest tenth.

20.0 in.

23.1 in.

23.7 in.

27.4 in.

A ramp leading into a building makes a 15° angle with the ground. The end of the ramp is 10 feet from the base of the building (along the ground).Approximately how long is the ramp? Round to the nearest tenth.

10.3 feet

10.4 feet

13.2 feet

38.6 feet

Which equation can be used to solve for c?