Back to Exercise: Law of Sines

Law of Sines

Grade 10·20 problems·~30 min·ACT Math·topic·act-geo-trig-lawsines
Work through problems with immediate feedback
A

Recall / Warm-Up

1.

In a right triangle, if the side opposite an angle is 5 and the hypotenuse is 13, what is the sine of that angle?

2.

If sin(θ)=0.6\sin(\theta) = 0.6, what is θ\theta to the nearest degree?

3.

In triangle ABC, angle A = 50° and angle B = 70°. What is angle C in degrees?

B

Fluency Practice

1.

In triangle ABC, angle A = 40°, angle B = 75°, and side a=10a = 10. Find side bb. Round to the nearest hundredth.

2.

In triangle DEF, angle D = 35°, angle F = 80°, and side f=20f = 20. Find side dd. Round to the nearest hundredth.

3.

In triangle PQR, angle P = 50°, angle Q = 60°, and side p=14p = 14. What is side qq? Round to the nearest tenth.

4.

In triangle ABC, angle A = 30°, side a=8a = 8, and side b=10b = 10. Find angle B in degrees. Round to the nearest tenth.

5.

In triangle XYZ, angle X = 45°, angle Y = 100°, and side y=25y = 25. Find side xx. Round to the nearest tenth.

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