Please help!! Writing an inequality out

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

How would you find the height of points on the circle? the topic is trigonometry.

Jeremy wants to determine the number of solutions for the equation below without actually solving the equation.