Question

1. The value of sin260° -sin ²30 ​

Answer 1

sin²60° - sin²30°

$(\frac{ \sqrt{3} }{2}) {}^{2} - ( \frac{1}{2} ) {}^{2} \\ \\ \frac{3}{4} - \frac{1}{4} \\ \frac{3 - 1}{4} \\ \frac{2}{4} \\ \\ = \frac{1}{2}$