If `sintheta= -1`, then the principal value of `theta` is

If cot theta-tantheta=2 then the principal value of theta is

If sintheta+costheta=sqrt(2) , then the principal value of (theta+(pi)/(4)) is

If the complex number (1-i sin theta)/(1+2 i sin theta) is purely imaginary, then the principal value of theta is

If sintheta=costheta , then the value of ' theta ' is ___.

Find the principal value of "tan"^(2)theta=1 .

If tantheta=-(1)/(sqrt(3)),sintheta=(1)/(2)andcostheta=-(sqrt(3))/(2) , then the principal value of theta will be

If tantheta=-(1)/(sqrt(3)),sintheta=(1)/(2)andcostheta=-(sqrt(3))/(2) , then the principal value of theta will be

If 0 leq theta leq pi and sin(theta/2)=sqrt(1+sintheta)-sqrt(1-sintheta) ,then the possible value of tan theta , is -

I) Principal value of cos theta=-1 is pi II) Principal value of sin theta=0 is pi Which of the above statement is correct?

I) Principal value of cos theta=-1 is pi II) Principal value of sin theta=0 is pi Which of the above statement is correct?