Question

Sin squar 22+ sin squar 68+ cot squar 30

Answer 1

${ sin}^{2} (22) + {sin}^{2} 68 + {cot}^{2} 30 \\ = {sin}^{2} 22 + {cos}^{2} 22 + 3 \\ = 4 \\ since \: {sin}^{2} x + {cos}^{2} x = 1$
hope it helps