SinA-sin4A/cos4A-cosA=cot5A/2

1.	SinA-sin4A/cos4A-cosA=cot5A/2
Answer» SOLUTION TO PROVE $\displaystyle \sf{ \frac{ \<klux>SIN</klux> A - \sin 4A}{\<klux>COS</klux> 4A - \cos A} = \cot \frac{5A}{2} }$ PROOF $\displaystyle \sf{ \frac{ \sin A - \sin 4A}{\cos 4A - \cos A} }$ $\displaystyle \sf{ = \frac{2\cos \frac{5A}{2} \: \sin \frac{3A}{2} }{2\sin \frac{5A}{2} \: \sin \frac{3A}{2} } }$ $\displaystyle \sf{ = \frac{\cos \frac{5A}{2} }{\sin \frac{5A}{2} \: } }$ $\displaystyle \sf{ = \cot \frac{5A}{2} }$ ━━━━━━━━━━━━━━━━ Learn more from Brainly :- 1. if sin THETA =√3/2,cos theta=-1/2 then theta LIES in brainly.in/question/31225531 2. value of(1+tan13)(1+tan32)+(1+tan12)(1+tan33) brainly.in/question/23306292

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