If `sintheta=(-4)/(5) and theta` lies in third quadrant, then the value of `cos""(theta)/(2)` is

If sin theta=-(4)/(5) and theta lies in third quadrant, then the value of cos((theta)/(2)) is

If sin theta = - (3)/(5) and theta lies in the third quadrant, then the value of cos (theta//2) is

If sin theta=(4)/(5) and theta is not in the first quadrant,find the value of cos theta

If tan theta=-(1)/(sqrt(5)) and theta lies in the IVB quadrant,then the value of cos theta is (sqrt(5))/(sqrt(6))b(2)/(sqrt(6))c*(1)/(2)d*(1)/(sqrt(6))

If tan theta=(1)/sqrt(5) and theta lies in the first quadrant, the value of cos theta is :

If tan theta=3 and theta lies in third quadrant then sin theta=

If tan theta=3 and theta lies in third quadrant then sin theta=

If tan theta = (1)/(sqrt5) and theta lies in the first quadrant, the value of costheta is :