Question

${\sin }^2{30}^0+{\cos }^2{30}^0$

Answer 1

${\sin }^2{30}^0+{\cos }^2{30}^0$

$={\left(\frac{1}{2}\right)}^2+{\left(\frac{\sqrt{3}}{2}\right)}^2$

$=\frac{1}{4}+\frac{3}{4}$

$=\frac{4}{4}$

$=1$