What is the measure of < XYZ , given that YZ and XY are tangent to ...

What basic trigonometric identity would you use to verify that csc x sec x cot x = csc^(2)x

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

True or false look at the picture pls : /