`(sinalpha)/3=(cosalpha)/4=>3sin2alpha+4cos2alpha=`

If tantheta=(sin alpha-cos alpha)/(sinalpha+cosalpha)1 then

If tantheta = (sinalpha-cosalpha)/(sinalpha+cosalpha), then (A) sin alpha-cos alpha=+-sqrt(2) sin theta (B) sinalpha+cosalpha=+-sqrt(2) cos theta (C) cos2theta=sin2alpha (D) sin2theta+cos2alpha=0

if tan theta=(sinalpha-cosalpha)/(sinalpha+cosalpha) show that, sin alpha+cosalpha=pmsqrt(2)cos theta

Eliminate alpha between the equations : ("sin"^(2)alpha)/(cosalpha)=a^(3) and (cos^(2)alpha)/("sin"alpha)=b^(3)

Prove that (sin alpha+sin2 alpha+sin3alpha+sin4alpha)/(cos alpha+cos 2 alpha+cos 3 alpha+cos4 alpha)=tan((5 alpha)/2)

Prove that (sinalpha)/(1+cosalpha)+(1+cosalpha)/(sin alpha)=2"cosec "alpha .

(sin 5 alpha-sin3alpha)/(cos 5 alpha+2 cos 4 alpha+cos 3alpha)=

If A_(alpha)=[(cosalpha,-sinalpha),(sinalpha,cosalpha)] , then

If A_(alpha)=[(cosalpha,sinalpha),(-sinalpha,cosalpha)] then (A_(alpha))^2=?