COMEDK · Maths · 1. Basic of Mathematics
If \(0 \leq x \leq \pi\) and \(81^{\sin ^{2} x}+81^{\cos ^{2} x}=30\) then \(x\) is equal to
- A \(\frac{\pi}{6}\)
- B \(\frac{\pi}{2}\)
- C \(\frac{\pi}{4}\)
- D \(\frac{3 \pi}{4}\)
Answer & Solution
Correct Answer
(A) \(\frac{\pi}{6}\)
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