Final answer:
To find the exact expressions for sin, cos, and tan, we need to use trigonometric ratios. In a right triangle, sin(theta) is equal to the ratio of the opposite side to the hypotenuse, cos(theta) is equal to the ratio of the adjacent side to the hypotenuse, and tan(theta) is equal to the ratio of the opposite side to the adjacent side.
Step-by-step explanation:
To find the exact expressions for sin, cos, and tan, we need to use trigonometric ratios. In a right triangle, sin(theta) is equal to the ratio of the opposite side to the hypotenuse, cos(theta) is equal to the ratio of the adjacent side to the hypotenuse, and tan(theta) is equal to the ratio of the opposite side to the adjacent side.
sin(theta) = y/h
cos(theta) = x/h
tan(theta) = y/x