In the triangle below, what is the cosine of 60 degrees?

Zoey made 5 1/2 cups of trail mix for a camping trip. she wants to divide the trail mix into 3/4 cup servings. a. ten people are going on the trip. can zoey make enough 3/4 cup servings so that each person gets one serving? b. what size would the servings need to be for everyone to have a serving?

50 points~ ! i have to turn this in tomarrow

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.