Question

2 sin square 45 degree + 4 sin square 30 degree

Answer 1

$\: \: \: \: 2 {sin}^{2} 45 + 4 {sin}^{2} 30 \\ = 2 {( \frac{1}{ \sqrt{2} } )}^{2} + 4 {( \frac{1}{2} )}^{2} \\ = 2( \frac{1}{2} ) + 4( \frac{1}{4} ) \\ = 1 + 1 \\ = 2$