Prove that : `sin^4\ pi/8 + sin^4\ (3pi)/8 + sin^4\ (5pi)/8 + sin^4\ (7pi)/8 = 3/2`

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Prove that : `sin^4\ pi/8 + sin^4\ (3pi)/8 + sin^4\ (5pi)/8 + sin^4\ (7pi)/8 = 3/2`
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Prove that : `sin^4\ pi/8 + sin^4\ (3pi)/8 + sin^4\ (5pi)/8 + sin^4\ (7pi)/8 = 3/2`

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Комментарии
Автор

Sin 180 degree minus theta is equal to sin theta but you had written -sin theta ....

aashujha
Автор

We can get the answer by another method that's very easy

newgamer