Prove that: a) (sin2theta)/(1+cos2theta...

Prove that: a) `(sin2theta)/(1+cos2theta) = tantheta` b) `(1+sin2theta+cos2theta)/(1+sin2theta-cos2theta)=cottheta`

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(1+sin 2theta+cos 2theta)/(1+sin2 theta-cos 2 theta) =

`(1)/(2)tan theta`

`(1)/(2)cot theta`

`tan theta`

`cot theta`

(sintheta+sin2theta)/(1+costheta+cos2theta) =

`(1)/(2)tantheta`

`(1)/(2)cottheta`

`tantheta`

`cottheta`

(sintheta+sin2theta)/(1+costheta+cos2theta)=?

`tantheta`

`sintheta`

`costheta`

`tan^(2)theta`