# Trigonometry Exam (20 Problems)

Please see the attached file for all of the fully formatted problems.

1. You have calibrated your voltmeter so that you know a meter reading

of 10 V is actually 10.2 V and a reading of 15 V is actually 15.6 V.

What is the actual voltage when your meter reads 12.3 V?

(1) 11.9V (3) 12.3 V (5) 13.1 V

(2) 12.1 V (4) 12.7 V (6) 18.1 V

2. What is the tangent of 57.43°?

(1) 0.63966 (4) 1.5626 (7) 0.63720

(2) 1 .5679 (5) 0.63694 (8) 1 .565 5

(3) 0.63940 (6) 1.5715

3. A triangle ABC has side lengths of a = 6, b = 9, and c = 10. What are the angles in the triangle?

(1) A = 36.34° B = 53.66°, C = 90°

(2) A = 27.33°, B = 53.66°, C = 99.01°

(3) A = 36.34° B = 62.72°, C = 80.94°

(4) A = 17.23°, B = 62.77°, C = 100.0°

4. Given a triangle in which A = 145°, b = 2, and c = 2.5, what is the length of a? (Hint: Topic 12 example 3)

(1) 1.439 (4) 4.294 (7) 18.44

(2) 2.051 (5) 13.53 (8) 0.5

(3) 3.998 (6) 14.35

5. Given a triangle in which A = 110°, C = 30° and a 730, find the

lengths of b and c.

(1) b = 1372,c = 1067 (3) b = 440.9,c = 388.4

(2) b = 388.4, c = 343.0 (4) b = 499.4, c = 388.4

6. What is the value of tan' 0.74919?

(1) 36.86° (2) 53.16° (3) 54.24° (4) 36.84°