If sin `alpha + cos alpha `= b, then sin 2`alpha` is equal to

If (sin alpha )/(a) = ( cos alpha )/(b) , then a sin 2alpha + b cos 2 alpha =

IF tan alpha = ( sin alpha - cos alpha )/( sin alpha + cos alpha) , then sin alpha + cos alpha is

I : If (cos alpha )/(a)=(sin alpha )/(b) then a cos 2 alpha + b cos 2 alpha =a II : If (sin alpha )/(a) =(cos alpha )/(b) then a sin 2 alpha + b cos 2 alpha = a

If (sin alpha)/(a)=(cos alpha)/(b), then a sin2 alpha+b cos2 alpha=

(sqrt(2)-sin alpha - cos alpha)/(sin alpha - cos alpha) is equal to

If A=[{:(cos alpha, sin alpha),(-sin alpha, cos alpha):}] , then what is A"A"^(T) equal to (where A^(T) is the transpose of A) ?

(sqrt(2)-sin alpha-cos alpha)/(sin alpha-cos alpha) is equal to

underset is If tan theta=(sin alpha-cos alpha)/(sin alpha+cos alpha), then sin alpha+cos alpha