A triangular region of a community college parking lot was measured. The measure of the first angle of this triangle is double the measure of the second angle. The measure of the third angle is 117° greater than double the measure of the first angle. What are the measurements of all three angles?

A 20 foot ladder is resting against the wall. The ladder touches the ground 8 feet from the wall. What angle rounded to the nearest 10th of a degree is the bottom of the ladder making with the ground? A. Draw and label to figure for this problem. B. Write the trig equation to find the angle. C. Solve the equation to find the measure of the angle to the nearest 10th of a degree. 

In the triangle RST, RS = 15, ST = 25, RT = 20. Which is the largest angle?  Explain how you know.

A right triangle has a 72° angle. Find the measures of the other two angles. (Enter your answers from smallest to largest.)