Question

The general solution of 8²(x)/(2)=1+ x is:

• A. 2nπ±⁻¹(-\frac13)
• B. 2nπ±(π)/(6)
• C. 2nπ±⁻¹(\frac13)
• D. None of these

Hint:

Use (x)/(2) identities in trigonometric equations.

Answer 1

The Correct Option is C

Using ²(x)/(2)=(1- x)/(1+ x): 8(1- x)/(1+ x)=1+ x Simplifying gives: x=\frac13 x=2nπ±⁻¹(\frac13)