66 \( \frac { \cos 10 ^ { \circ } + \sin 10 ^ { \circ } } { \cos 10 ^ { \circ } - \sin 10 ^ { \circ } } \) is equal to
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Prove that cos10.cos30.cos50.cos70=3/16
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1show that cos10 cos50 cos60 cos70 3 16 - Mathematics - TopperLearning.com | 4494
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Prove that cos10°.cos30°. cos50°.cos 70° = 3/16 - Sarthaks eConnect | Largest Online Education Community
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