Find an equation for each line.

If m 17 27 90 63 ** picture is attached

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?

Ihave a triangle with a 60 degree angle. lets use d for that angle. what are the values of e and f if d is 60 degrees? and what do you notice about the values of e and f?