In the right triangle ABC, angle C is equal to 90 degrees, AB is the hypotenuse, BC is the opposite side of angle A, and AC is the opposite side of angle B..
Sine function is sin (a) = a/c.
Properties of sine function: sine resolution function: y=sinx.
The ratio of the adjacent side to the hypotenuse of Angle A is called cosine of Angle A, and it is denoted as cosA, that is, cosA= the adjacent side/hypotenuse of Angle A..