A secant and a tangent meet at a 90° angle outside the circle. What must be the difference between the measures of the intercepted arcs?

45°
90°
180°
270°

What is the perimeter of square abcd? units units 28 units 37 units

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?

Which equation represents h for right triangle abc