sin^-1 x + sin^-1 y +sin^-1 z = pi. prove that x^2-y^2-z^2+2yz[root(1-x^2)]=0
sin^-1 x + sin^-1 y +sin^-1 z = pi. prove that x^2-y^2-z^2+2yz[root(1-x^2)]=0

Last Activity: 3 Years ago

Last Activity: 3 Years ago

Last Activity: 3 Years ago

Last Activity: 3 Years ago

Last Activity: 3 Years ago