[" (If) "A,=[[cos alpha,sin alpha],[-sin alpha,cos alpha]]],[A^(2),=[[cos2 alpha,sin2 alpha],[-sin2 alpha,cos2 alpha]]]

If A,=[[cos alpha,sin alpha-sin alpha,cos alpha]] then show that ,A^(2)=[[cos2 alpha,sin2 alpha-sin2 alpha,cos2 alpha]]

A=[[Cos alpha,sin alpha],[-Sin alpha,cos alpha]] then A^(2)

if A,=[[cos alpha,sin alpha-sin alpha,cos alphasin alpha,cos alphacos2 alpha,sin2 alpha-sin2 alpha,cos2 alpha]]

A=[[cos alpha,sin alpha],[-sin alpha,cos alpha]] find [A^(2)(alpha)]^(-1)

sin alpha-sin2 alpha+sin3 alpha=4cos(3 alpha)/(2)cos alpha sin(alpha)/(2)

If A=[(cos^2 alpha,sin^2alpha),(cos alpha,sin alpha)] and B=[(sin^2 alpha,cos^2 alpha),(sin alpha,cos alpha)]. Find (A+B).

Prove that, (sin alpha + cos alpha)/(cos alpha-sin alpha)=tan2 alpha + sec 2 alpha

If A_(alpha), = [{:(cos alpha , sin alpha),(-sin alpha , cos alpha):}] , then

cos^(4)alpha+sin^(4)alpha-6sin^(2)alpha cos^(2)alpha=

( sin 8 alpha * cos alpha - sin 6 alpha * cos 3 alpha )/(cos 2 alpha cos alpha - sin 3 alpha * sin 4alpha ) =