Question

& ( (sin theta-cos theta)^{2}+(8 n theta+cos theta)^{2} )
[
begin{array}{l}(sin theta-cos theta)(sin theta+cos theta) =(1-sin 2 theta)+(1+sin 2 theta) =sin ^{2} theta-cos ^{2} thetaend{array}
]
( =frac{2}{sin ^{2} theta-1+sin ^{2} theta}=frac{2}{2 sin ^{2} theta-1} )

# Prove that: sin 0 - cos sin 0 + cose sin 0 + cos sin 0 - cos 2 2 sin? 0-1

Solution