Solve for x when x is between 0 and 360
tan2x+1=0
This is what i did:
tan2x+1=0
tan2x= -1
the places where tan = -1 between 0 and 360 are
135, 315, 495, and 675 (divided these by 2 to get the actual angles)
Actual angles are:
67.5,157.5,202.5,337.5
Those were my answers..
the answer in the back of the book is 0 degrees
I don't understand this??
What am i missing