Help visualizing a trigonometry problem?

A receiver starts his route on the right hash mark of the forty yard line. He runs down the field at a fifty degree angle toward the right sideline and at the thirty yard line he turns back toward the middle of the field and catches the ball on the right hash mark of the fifteen yard line.

How far did the receiver actually run to make the reception at the fifteen yard line?

I know how to do trig perfectly so I don t really need help with the math. I just cannot figure out the triangle being made. If someone could help me visualize the lengths of the sides of the triangle being made that would be very helpful!