cos ^{3}left(frac{pi}{8}right) cdot cos left( | vedclass

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Question

$\cos ^{3} \frac{\pi}{8} \cdot \sin \frac{\pi}{8}+\sin ^{3} \frac{\pi}{8} \cdot \cos \frac{\pi}{8}$

$=\sin \frac{\pi}{8} \cdot \cos \frac{\pi}{8}=\

Vedclass · Accepted Answer

$\frac{1}{2\sqrt{2}}$

Vedclass · Answer

$\cos ^{3} \frac{\pi}{8} \cdot \sin \frac{\pi}{8}+\sin ^{3} \frac{\pi}{8} \cdot \cos \frac{\pi}{8}$

$=\sin \frac{\pi}{8} \cdot \cos \frac{\pi}{8}=\frac{1}{2} \sin \frac{\pi}{4}=\frac{1}{2 \sqrt{2}}$

$\cos ^{3}\left(\frac{\pi}{8}\right) \cdot \cos \left(\frac{3 \pi}{8}\right)+\sin ^{3}\left(\frac{\pi}{8}\right) \cdot \sin \left(\frac{3 \pi}{8}\right) \text { का मान }$ है

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