Unit Q Question #3: Concept 4 problems

Write four of your own Concept 4 problems (one from each level) and solve them.  Explain each step.

Level 1:  tan(x)=1
Level 2:  sinx(sinx-1)=0

Level 3:  sin(x)cos(x)=2sin(x)
Level 4:  csc4x=2