Question

Evaluate -5tan^2 45 - 3(cos^2 60 + sin^2 30 - 5cos^2 60)

Answer 1

Answer:2(1/2)^2-3*(1/sqrt2)^2+sqrt3^2`

`=1/2-3/2+3`

`=3-1`

`=2`.

hope it helps u