Given that formula
((4-(-2))^2- (5-5))^1/2
((4+2)^2 -(0))^1/2
((6)^2 -0)^1/2
(36)^1/2
The answer is 6
(Note the 1/2 is also a substitute for the square root sign)
28i-49+36i^2-63i
This is the right answer from your problem
the answer is d ( square root 3 )
tan = oposite / adjacent
tan 60° = √3 / 1
= √3
They are adjacent angles, they don't overlap and share a common vertex.