Question

Evaluate:

2 sin² 30° sec 60° + tan² 60°.

Answer 1

2 sin² 30° sec 60° + tan² 60°

= `2 (1/2)^2 xx 2 + (sqrt3)^2`

= `2 xx 1/4 xx 2 + 3 = 1 + 3 = 4`