If `sin theta = -1/2`, then `theta`=

If sin theta = 1/2, then cot theta …………

If sin 2theta= 1/2 then theta =

If cos theta.sin theta = 1/2 , then theta =……….

The most general value of theta satisfying both the equations sin theta = 1//2, tan theta = 1//sqrt(3) is

If sin theta = 1/2 and theta is acute then (3 cos theta -4 cos^(3) theta) is equal to

If sin theta _1+ sin theta _2+ sin theta _3=3 " then " cos theta _1 + cos theta _2 + cos theta_3 =

If sin theta = (1)/(2)cos theta , and 0 le theta le (pi)/(2) , the value of (1)/(2)sin theta is

If sin theta_1+sin theta_2+sin theta_3+sin theta_4=4 , then what is the value of cos theta_1+cos theta_2+cos theta_3+cos theta_4=?