Question

4cot^2 45- sec^2 60+ sin^2 60​

Answer 1

Answer:

cot 45⁰= 1

sec 60⁰= 2

sin 60⁰= (3)½/2

$4 \times {1}^{2} - {2}^{2} + ({ \frac{ \sqrt{3} }{2} })^{2} \\ \\ 4 - 4 + \frac{3}{4} \\ \\ 0 + \frac{3}{4} \\ \\ \frac{3}{4}$