If `costheta_1+costheta_2+costheta_3=3 ` then ` sin^2theta_1+sin^4theta_2+sin^6theta_3=`

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

costheta-cos2theta=sin3theta

If sintheta-costheta=0 , then sin^3theta+cos^3theta=?

If costheta+cos^(2)theta=1 , then find the value of sin^(4)theta+sin^(2)theta .

if sintheta,tantheta,costheta are in G.P. then 4sin^2theta-3sin^4theta+sin^6theta= __________ .

x=3costheta-2cos^(3)theta, y = 3 sin theta- 2 sin^(3) theta

if theta_1, theta_2, theta_3, ........, theta_n are in AP then (sintheta_1 + sintheta_2 + ....... + sintheta_n) / (costheta_1 + costheta_2 + costheta_3 + ...... + costheta_n ) =?

If sintheta+costheta=1 , then the value of sin2theta is

If sintheta+costheta=1/2 then find the value of 16(sin2theta+cos4theta+sin6theta)

The value of (sin^3 theta + cos^3 theta)/(sin theta+ costheta)+((cos^3 theta - sin^3 theta))/(cos theta - sin theta) is