Which of the following are solutions to the equation tan^2 x-1=0 A. -pi/2
B. pi/2
C. pi/4
D. 3pi/4

This is so hard and it’s for a test

Answer each of the questions for the following diagram: 1. what type of angles are these? 2. solve for x. what does x equal? 3. what is the measure of the angles?

Atotal of 505 tickets were sold for a school play they were either adult tickets or student tickets they were 55 more student tickets so than adult tickets how many adult tickets were sold ?