If `cos theta_1+ cos theta_2+ cos theta_3=-3` then the value of `sin(theta_1 /2)+ sin (theta_2 / 2)+ sin(theta_3 /2)=`

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

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

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

if cos theta_(1) + cos theta_(2) + cos theta_(3)= sin theta_(1) + sin theta_(2) + sin theta_(3)= 0 , then the value of cos (theta_(1) + theta_(2)) + cos (theta_(2) + theta_(3)) + cos (theta_(3) + theta_(1)) is

If Cos theta_(1) + Cos theta_(2) + Cos theta_(3) = 3 then Sin theta_(1) + Sin theta_(2) + Sin theta_(3) =

If cos theta_(1)+cos theta_(2)+cos theta_(3)=3 then sin^(2)theta_(1)+sin^(4)theta_(2)+sin^(6)theta_(3)=

If 1+sin^(2)theta = 3 sin theta cos theta , then theta =

If sin theta_(1)+sin theta_(2)+sin theta_(3), then find the value of cos theta_(1)+cos theta_(2)+cos theta_(3)

If sin theta_1 + sin theta_2 + sintheta_3 =3 then cos theta_1 + cos theta_2 + costheta_3 is equal to