Question

Sin square 30 plus cos square 60

Answer 1

${sin}^{2} 30 + {cos}^{2} 60 \\ \frac{1}{2} ^{2} + \frac{1}{ \sqrt{3} } ^{2} \\ \frac{1}{4} + \frac{1}{3 } \\ \frac{1}{4} \times \frac{3}{3} + \frac{1}{3} \times \frac{4}{4 } \\ \frac{3}{12} + \frac{4}{12 } \\ = \frac{7}{12}$

I guess not sure.