If `a=costheta+isintheta`, then `(1+a)/(1-a)` is equal to (i)`cot(theta/2)` (ii)`cottheta` (iii)`icot(theta/2)` (iv)`itan(theta/2)`

If a=costheta+isintheta, then (1+a)/(1-a) is: (a) . cot(theta/2) (b) . cottheta (c) . icot(theta/2) (d) . itan(theta/2)

If alpha=cos theta+i sin theta, then (1+alpha)/(1-alpha) equals ( (i)cot theta(ii)i tan((theta)/(2))(iii)i cot((theta)/(2))(iv)cot((theta)/(2))

If a=cos theta+i sin theta, then (1+a)/(1-a)=(cot theta)/(2) b.cot theta c.i(cot theta)/(2)d*i(tan theta)/(2)

If z= costheta+isintheta , then the value of (z^(2n)-1)/(z^(2n)+1) (A) i tan n theta (B) tan n theta (C) icot n theta (D) -i tan n theta

What is (costheta)/(1-tantheta)+(sin theta)/(1-cottheta) equal to ?

If cosec theta - cottheta = (1)/(3) , then cosec theta + cot theta =

If cosec theta - cottheta = (1)/(3) , then cosec theta + cot theta =

Prove that sqrt(cot^(2)theta-cos^(2)theta)=cottheta.costheta

Prove that: (i) (costheta)/(1-sintheta)=(1+sintheta)/(costheta) (ii) (1+costheta-sin^(2)theta)/(sintheta+sinthetacostheta)=cottheta (iii) 1+(tan^(2)theta)/(1+sectheta)=sectheta