Question

4/cot^2 30°+1/sin^2 60°_cos^2 45°_tan^2 45°

Answer 1

Answer:

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

$\frac{4}{3} + \frac{4}{3} - \frac{1}{2} - 1 = \frac{8 + 8 - 3 - 6}{6} = \frac{7}{6}$

Ans.