Recommended Questions
- Prove that: (cos2A+cos3A+cos4A)/(sin2A+sin3A+sin4A)= cot3A
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- (cos3A-cos A)/(sin3A-sin A)+(cos2A-cos4A)/(sin4A-sin2A)=(sin A)/(cos2A...
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- (cos2A cos3A-cos2A cos7A+cos A cos10A)/(sin4A sin3A-sin2A sin5A+sin4A ...
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- (sinAsin2A+sin3Asin6A+sin4Asin13A)/(sinAcos2a+sin3Acos6A+sin4Acos13A)=...
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- (sinA sin 2A + sin 3A sin 6A+ sin4A sin13A)/(sinAcos2A+sin3Acos6A+sin4...
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- (cos2A cos3A-cos2A cos7A+cos A cos10A)/(sin4A sin3A-sin2A sin5A+sin4A ...
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- Prove that: \ cos A+cos3A+cos5A+cos7A=4cos A cos2A cos4A
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- Prove that: (cos4A+cos3A+cos2A)/(sin4A+sin3A+sin2A)=cot3A
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- sin A sin2A + sin3A sin6A-sin4A sin5A = 0
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