How do i do this i do not understand how to do this math problem

What is the measure of angle z in this figure? enter your answer in the box. z = ° two intersection lines. all four angles formed by the intersecting lines are labeled. clockwise, the angles are labeled 43 degrees, x degrees, y degrees, and z degrees.

For the equations below which statement is true ?

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg