Engineering Board Exam Reviewer · Trigonometric Equations · medium

Find the smallest positive solution of x+ x=2.

1. 45°
2. 30°
3. 60°
4. 22.5°

Answer

A. 45°

Solution

Let t= x: t+ 1t=2 (t-1)2=0 x=1, so x=45°.

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