1.

If \(\frac{(1 +sinθ-cosθ)}{(1 +sinθ +cosθ)} + \frac{(1 + sinθ +cosθ)}{(1 + sinθ-cosθ)}\)= 4, then which of the following values will be suitable for θ ?

A. 45°
B. 30°
C. 90°
D. 60°
Answer» C. 90°


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