Right Triangle




1. Open the GSP Sketch which has the measurements, sine,cosine, and tangents calculated (see sketch on right). Using the sketch,dragging point C, answer these questions:

a. How are the sine and cosine related?

sin A = Cos C

b. What is the maximum value of the sine? 1.0

c. What angle gives you this maximum value?

d. What is the minimum value of the cosine? 0

e. What angle gives you this mimimum value.

2. Write the tangent in terms of the sine and cosine.


Find the value of x. Round measures of segments to the nearest tenth and angle measures to the dearest degree.

3. x =


x = 9.3

5. x =