Law of Sines and Cosines Review Worksheet

Find BC.

• 5 cm

• 10 cm

• 15 cm

• 20 cm

Find m∠A.

• 30°

• 45°

• 60°

• 90°

Find m∠C.

• 30°

• 45°

• 60°

• 90°

Find AC.

• 5 cm

• 10 cm

• 15 cm

• 20 cm

Solve each triangle. Round your answers to the nearest tenth.

• Triangle ABC with angles 30°, 60°, 90°

• Triangle DEF with angles 45°, 45°, 90°

• Triangle GHI with angles 60°, 60°, 60°

• Triangle JKL with angles 90°, 45°, 45°

Solve each triangle. Round your answers to the nearest tenth.

• 30.5, 45.2, 60.3

• 25.0, 35.5, 50.5

• 40.0, 55.0, 70.0

• 20.0, 30.0, 40.0

Given m∠C = 110°, b = 35 mi, c = 38 mi, what is the length of side a?

• 20 mi

• 30 mi

• 40 mi

• 50 mi

Given b = 17 in, a = 11 in, c = 10 in, find the measure of angle A.

• 30°

• 45°

• 60°

• 90°

Given b = 14 cm, m∠A = 107°, c = 23 cm, find the length of side a.

• 10 cm

• 15 cm

• 20 cm

• 25 cm

Given m∠A = 115°, c = 19 mi, a = 28 mi, find the length of side b.

• 15 mi

• 20 mi

• 25 mi

• 30 mi