TS EAMCET · Maths · Trigonometric Ratios & Identities
\(\begin{aligned} & \sin ^4 \frac{\pi}{8}+\cos ^4 \frac{3 \pi}{8}-\sin ^4 \frac{3 \pi}{8}+\sin ^4 \frac{5 \pi}{8} \ &+\cos ^4 \frac{7 \pi}{8}-\sin ^4 \frac{7 \pi}{8}=\end{aligned}\)
- A \(\frac{1}{4}\)
- B \(\frac{1}{2}\)
- C 0
- D \(\frac{3}{4}\)
Answer & Solution
Correct Answer
(D) \(\frac{3}{4}\)
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