`(sintheta+7costheta)^2+(7sintheta-costheta)^2=?`

Evaluate : ( sintheta + costheta ) ( sintheta - costheta )

If : tantheta=(1)/(7), "then" : (2sintheta+3costheta)/(3sintheta+4costheta)=

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

If (sintheta+costheta)/(sintheta-costheta)=3 and theta is an acute angle, then the value of (3sintheta+4costheta)/(8costheta-3sintheta) is

If (1+ sintheta-costheta)/(1+ sintheta + costheta)+(1+sintheta+costheta)/(1+sintheta-costheta)= 4 , then which of the following values will be suitable for theta ?

If (sintheta+costheta)/(sintheta-costheta)=3 then the value of sin^(4)theta is :

((1+sintheta+i costheta)/(1+sintheta-i costheta))^n is equal to

If sintheta+costheta=x then sintheta-costheta=?

(sintheta+costheta)/(sintheta-costheta)+(sintheta-costheta)/(sintheta+costheta) =_____________.

If, 5cot theta =3 ,Find the value of (6sintheta-3costheta)/(7sintheta+3costheta)