If ` A B C` having vertices `A(acostheta_1,asintheta_1),B(acostheta_2asintheta_2),a n dC(acostheta_3,asintheta_3)` is equilateral, then prove that `costheta_1+costheta_2+costheta_3=sintheta_1+sintheta_2+sintheta_3=0.`

If DeltaABC having vertices A(acostheta_1, asintheta_1), B(acostheta_2, asintheta_2), and C(acostheta_3, asintheta_3) are equilateral triangle, then prove that cos theta_1 + costheta_2 + cos theta_3 =0 and sintheta_1 + sintheta_2 + sintheta_3 =0

If (acostheta_1,asintheta_1),(acostheta_2,asintheta_2) and (acostheta_3,asintheta_3) represent the vertices of an equilateral triangle inscribed in a circle, then (a) costheta_1+costheta_2+costheta_3=0 (b) sintheta_1+sintheta_2+sintheta_3=0 (c) tantheta_1+tantheta_2+tantheta_3=0 (d) cottheta_1+cottheta_2+cottheta_3=0

If 3costheta-4sintheta=2costheta+sintheta , find tantheta .

(1+costheta+sintheta)/(1+costheta-sintheta)=(1+sintheta)/(costheta)

If (a costheta_1,asintheta_1),(acostheta_2,a sintheta_2) , and (acostheta_3a sintheta_3) represent the vertces of an equilateral triangle inscribed in a circle. Then.

Prove that : (1+sintheta)/(costheta)+(costheta)/(1+sintheta)=2sectheta

Prove that: (1+sintheta-costheta)/(1+sintheta+costheta)=tantheta/2

If costheta-sintheta=sqrt(2)sintheta , then prove that: costheta+sintheta=sqrt(2)costheta

Prove that (costheta-sintheta+1)/(costheta+sintheta-1)=c o s e ctheta+cottheta

Prove that: (sectheta-1)/(sectheta+1)=((sintheta)/(1+costheta))^2