If `sin^-1 x=theta+beta and sin^-1 y= theta-beta,` then `1+xy=`

If sin^(-1)x=theta+beta andsin ^(-1)y=theta-beta, then 1+xy is equal to sin^(2)theta+sin^(2)beta(b)sin^(2)theta+cos^(2)beta cos^(2)theta+cos^(2)theta(d)cos^(2)theta+sin^(2)beta

If sin^(-1)x=theta+betaa n dsin^(-1)y=theta-beta, then 1+x y is equal to

If sin^(-1)x=theta+betaa n dsin^(-1)y=theta-beta, then 1+x y is equal to sin^2theta+sin^2beta (b) sin^2theta+cos^2beta cos^2theta+cos^2theta (d) cos^2theta+sin^2beta

If sin^(-1)x=theta+betaa n dsin^(-1)y=theta-beta, then 1+x y is equal to sin^2theta+sin^2beta (b) sin^2theta+cos^2beta cos^2theta+cos^2theta (d) cos^2theta+sin^2beta

If sin^(-1)x= theta +phi and sin^(-1)y = theta - phi , then: 1+xy =

If: sin^(-1)x = alpha + beta and sin^(-1)y = alpha - beta , then: 1+xy =

If sin (theta + alpha) = a and sin (theta + beta) = b,"then" cos 2 (alpha - beta) - 4ab cos (alpha - beta) =

If sin theta = x and sec theta = y , then tan theta is (a) xy (b) x/y (c) y/x (d) 1/(xy)

If (alpha, beta) is a point of intersection of the lines xcostheta +y sin theta= 3 and x sin theta-y cos theta= 4 where theta is parameter, then maximum value of 2^((alpha+beta)/(sqrt(2)) is