`(sin3theta+sin5theta+sin7theta+sin9theta)/(cos3theta+cos5theta+cos7theta+cos9theta)i se q u a lto` `tan3theta` (b) `cot3theta` (c) `tan6theta` (d) `cot6theta`

(sin 3theta+sin5theta+sin7theta+sin9theta)/(cos 3theta+cos 5theta+cos 7theta+cos9theta) is equal to

(sin3 theta+sin5 theta+sin7 theta+sin9 theta)/(cos3 theta+cos5 theta+cos7 theta+cos9 theta)

(sin3 theta-sin theta)/(cos theta-cos3 theta)=cot2 theta

(sin5theta+sin3theta)/(cos5theta+cos3theta) is equal to

(sin 3 theta + sin 5 theta + sin 7 theta + sin 9theta)/(cos 3 theta + cos 5 theta + cos 7 theta + cos 9 theta )=

(sin theta+sin3 theta+sin5 theta)/(cos theta+cos3 theta+cos5 theta)=tan3 theta

For any angle theta . (sin2theta+sin4theta+sin6theta+sin8theta)/(cos2theta+cos4theta+cos6theta+cos8theta)=.... (a) tantheta (b) tan 3theta (c) tan5theta (d) none of these

(sin5 theta-2sin3 theta + sin theta) / (cos5 theta-cos theta) = tan theta

Prove that :(sin5 theta-2sin3 theta+sin theta)/(cos5 theta-cos theta)=tan theta

Prove that (sin theta + sin 3theta+ sin 5 theta + sin 7theta)/(cos theta + cos 3theta + cos 5 theta + cos 7theta) = (tan 3theta + tan theta)/(1 - tan 3theta tan theta) .