Sine and Cosine #9

Sine of theta is equal to the y value of a triangle. Cosine of theta is equal to the x value of a triangle. A way to find sine and cosine is to remember SOH CAH. The SOH represents sine = opposite/the adjacent side of the theta. The CAH represents cosine = adjacent/the hypotenuse of the triangle. Sine is always positive in the first and second quadrants. Cosine is always positive in the first and fourth quadrants.