Teaching Jharkhand (JSSC) TGT (6 to 8) Mock Test 2023-24 Mathematics Trigonometry Trigonometric Identities
\(\sin^4 \frac{\pi}{8}+\cos^4 \frac{3 \pi}{8}−\sin^4 \frac{3 \pi}{8}+\sin^4 \frac{5 \pi}{8}+\cos^4 \frac{7 \pi}{8}−\sin^4 \frac{7 \pi}{8} \) =
1
\(\frac{1}{4}\)
2
\(\frac{1}{2}\)
3
0
4
\(\frac{3}{4}\)