Question

cot^2 30 - cos^2 60 - 3/4 sec^2 45 - 4 sec^2 30

Answer 1

${ \sqrt{3} }^{2} - { \frac{1}{2} }^{2} - \frac{3}{4} \times { \sqrt{2} }^{2} - 4 \times { \frac{2}{ \sqrt{3} } )}^{2} \\ 3 - \frac{1}{4} - \frac{3}{2} - \frac{16}{3} \\ 36 - 3 - 18 - 64 \div 12 \\ - \frac{49}{12}$

hope this will help u