Cos^-1(x/a)+cos^-1(y/b)=x^2/a^2+y^2-2xysin♂/ab inverse trigonometric

Cos^-1(x/a)+cos^-1(y/b)=x^2/a^2+y^2-2xysin♂/ab inverse trigonometric

iif you are interested in finding most important question related to board exam 12 class maths .then you can easly find it here