1.

i) Express (sin 4theta)/(sin theta) interms of cos^(3) theta and costheta ii) Express cos^(6)A+sin^(6)A interms of sin 2A iii) Express (1-costheta+sintheta)/(1+cos theta+sin theta) interms of tantheta/2

Answer»


ANSWER :i) `8Cos^(3)theta-4Costheta`
ii) `1-3/4 SIN^(2)2A`
iii)`"TAN"theta/2`


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