Question

Question #75454

Answer 1

`theta` is unreal.

Explanation:

LHS

`= 4sqrt2(1/sqrt2sin theta +1/sqrt2costheta)`

`=4sqrt2(sin theta cos (pi/4)+costheta sin(pi/4))`

`=4sqrt2sin (theta+pi/4) in [-4sqrt2, 4sqrt2]]`

and the RHS 16 is out of bounds.