Question

Show that sin^2 30°+sec^2 30°+tan^2 45°=2?

Answer 1

`sin^2 30°+sec^2 30°+tan^2 45°`

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

`=1/4 + 4/3 + 1`

`=(3+16+12)/12 = 31/12=2.58`