Past Board Exam Problems in Trigonometry 1. 2. 3. 4. 5. CE Board Exam November 1993 If sin 3A = cos 6B then A. A + B = 90° B. A + 2B = 30° C. A + B = 180° D. none of these CE Board Exam November 1993 If cos 65° + cos 55° = cos θ, find θ in radians. A. 0.765 B. 0.087 C. 1.213 D. 1.421 6. 7. 8. CE Board Exam November 1992 15   Find the value of sin  arccos  17   A. 8/11 B. 8/19 C. 8/15 D. 8/17 CE Board Exam November 1992 If tan x = 1/2, tan y = 1/3. What is the value of tan (x + y)? A. 1/2 B. 1/6 C. 2 D. 1 CE Board Exam November 1993 Find the value of y in the given equation: y = (1 + cos 2θ)tan θ A. sin θ B. cos θ C. sin 2θ D. cos 2θ 9. CE Board Exam May 1992 sin θ + cos θ tan θ Find the value of cos θ A. 2sin θ B. 2cos θ C. 2tan θ D. 2cot θ CE Board Exam May 1994 If coversed sin θ = 0.134, find the value of θ. A. 30° B. 45° C. 60° D. 90° CE Board Exam November 1997 The angle of elevation of the top of tower B from the top of the tower A is 28° and the angle of elevation of the top of tower A from the base of the tower is B is 46°. The two towers lie in the same horizontal plane. If the height of the tower B is 120 m, find the height of tower A. A. 66.3 m B. 79.3 m C. 87. 2 m D. 90.7 m CE Board Exam November 1997 Points A and B are 100 m apart and are of the same elevation as the foot of a building. The angles of elevation of the top of the building from points A and B are 21° and 32° respectively. How far is A from t ...
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