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

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

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

IF sin theta=4/5 and theta is not in the first quadrant, find the value of cos theta .

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

If tan theta = -1/sqrt(5) and theta lies in the fourth quadrant, then: cos theta =

if tan theta=-(1)/(sqrt(10)) and theta lies in the fourth quadrant then cos theta

If tan theta =-(1)/(sqrt10)and theta lies in the fourth quadrant, then sec theta =

If tan theta =-(1)/(sqrt10)and theta lies in the fourth quadrant, then sec theta =

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