Find the sine, cosine, and tangent of $\angle A$ . An angle is shown in quadrant 1 on a coordinate plane. Angle A has its vertex at the origin, one side on the positive x-axis, and one side passing through the ordered pair twelve over thirteen comma 5 over thirteen on a circle with radius r equals 1. Question 1 $\sin\ A$ = Question 2 $\cos\ A$ = Question 3 $\tan\ A=$ Skip to navigation