If `sintheta_(1)+sintheta_(2)+sintheta_(3)=3, then 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

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 sintheta=sqrt3/2 , then cos theta =?

If 0 lt theta_(2) lt theta_(1) lt pi/4, cos (theta_(1) + theta_(2)) = 3/5 and cos(theta_(1)-theta_(2))=4/5 , then sintheta_(1) sintheta_(2) equal to

If 0 lt theta_(2) lt theta_(1) lt pi/4, cos (theta_(1) + theta_(2)) = 3/5 and cos(theta_(1)-theta_(2))=4/5 , then sintheta_(1) sintheta_(2) equal to

If : cos theta+sintheta=1, "then" : cos theta-sintheta