If a = `cos theta +theta i sin, "then find the value of" (1+a)/(1-a)`.

If a= cos theta+ i sin theta , then find the value of (1+a)/(1-a)

If a=cos theta+i sin theta, then find the value of (1+a)/(1-a)

If a=cos theta+i sin theta, find the value of (1+a)/(1-a)

If a=cos theta +i sin theta , find the value of frac{1+a}{1-a}

If (2 sin theta )/(1+ cos theta + sin theta )=x, find the value of (1- cos theta + sin theta )/(1+ sin theta )

If (cos theta)/(1- sin theta) + (cos theta)/(1 + sin theta) =4 , then find the value of cos theta . Find theta if 0^(@) lt theta lt 90^(@)

If 2 sin theta cos theta = 1 , then find the value of sin theta-cos theta .

If sin theta+cos theta=1, then find the general value of theta.

If sin theta_1 + sintheta_2 + sin theta_3 = 3 then find the value of cos theta_1 + cos theta_2 + cos theta_3.