Question

How do you verify `2sin^2 x = 2 + cos x`?

Answer 1

I do not think they are equal...

Explanation:

You can try using an angle, say `30^@`
`2sin^2(30^@)=2+cos(30^@)`
`2*(1/2)^2=2+sqrt(3)/2`
`1/2=(4+sqrt(3))/2` which is not true.