3cosx-1=2 and 2sin(2x)-square root of 3=0 and tan squaredx-1=0?

Question

Solve the following for the principal values of the indicated variable. By the way these are 3 different problems

Answer 1

3cosx - 1 = 2

3cosx = 3 and cosx = 1
x = 0 degrees

2sin(2x) - sqrt3 = 0

sin 2x = sqrt3/2
2x = 60 and x = 30 degrees

tan ^2 x - 1 = 0
tan^2 x = 1

tanx = 1
x = 45 degrees

Answer 2

Do your homework by yourself, kid.