Engineering Board Exam Reviewer · Trigonometric Equations · medium

EE Board March 1998: If 2A = 1/ 13A, determine the angle A in degrees.

1. 5°
2. 6°
3. 3°
4. 7°

Answer

B. 6°

Solution

2A=1/ 13A 2A= 13A (90°-2A)= 13A 90°-2A=13A A=6°.

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