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

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

If tan theta=(sin alpha-cos alpha)/(sin alpha+cos alpha), prove that 2cos^(2)theta=1+sin2 alpha

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

If sin.alpha/2+cos.alpha/2=1.4, then: sinalpha=

If tan theta=(sin alpha- cos alpha)/(sin alpha+cos alpha) , then sin alpha+cos alpha =.................... A) sqrt2 cos, theta sqrt2 sintheta B) -sqrt2 sin theta, -sqrt2 cos theta C) sqrt2 sin theta , sqrt2 sin theta D) sqrt2 cos theta , - sqrt2 cos theta

If (sin alpha-cosalpha)/(sin alpha+cosalpha)=tan theta , then prove that sin prop + cos prop = pm sqrt(2)cos theta.

IF (cosalpha)/a=(sinalpha)/b then a cos 2alpha+bsin 2 alpha =……….

If" " tan theta = (sin alpha - cos alpha)/(sin alpha + cos alpha),"prove that",2 cos^(2) theta = 1 + sin 2 alpha.

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