Question

DATE
sin^2 82 1 /2 - sin²22
1/2°​

Answer 1

$\therefore \rm \sin^{2} 82 \frac{1}{2} - \sin^{2}22 \frac{1}{2} \degree \\ \implies \rm { \sin }^2 41 \degree - { \sin}^{2} 11\degree \\ \implies \rm ({\frac{1}{\sqrt{2}}})^2 - ({\frac{1}{4}})^{2} \\ \implies \rm \frac{1}{2} - \frac{1}{16} \\ \implies \rm \bf \frac{-8}{16}$