Question

sin^2 30+ cos^2 60= 1 supra 2

Answer 1

$sin30=\frac{1}{2}\\\\cos60=\frac{1}{2}\\\\sin^230+cos^260=(\frac{1}{2})^2+(\frac{1}{2})^2=\frac{1}{4}+\frac{1}{4}=\frac{2}{4}=\frac{1}{2}$