Question

the value is equal to​

Answer 1

Answer:

$= > 1 - { \sin(30) }^{2} \\ = > 1 - {( \frac{1}{2}) }^{2} \\ = > 1 - \frac{1}{4} \\ = > ( \frac{4 - 1}{4} ) \\ = > \frac{3}{4}$