Simplify to a single trig function with no denominator 1-sin^2x

Consider an example of a deck of 52 cards: example set of 52 playing cards: 13 of each suit clubs, diamonds, hearts, and spades ace 2 3 4 5 6 7 8 9 10 jack queen king clubs diamonds hearts spades what is the probability of drawing three queens from a standard deck of cards, given that the first card drawn was a queen? assume that the cards are not replaced.

What are the measures of angles a, b, and c? show your work and explain your answers. 25 points

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