1.
If sin1(35)+sin1(1213)=sin1(??)+cos1(??)\sin^{-1} \left(\frac{3}{5}\right) + \sin^{-1} \left(\frac{12}{13}\right) = \sin^{-1} \left(\frac{?}{?}\right) + \cos^{-1} \left(\frac{?}{?}\right), then the value of xx is equal to
Trigonometry - Medium - Question