Which trig function will you use to find the component parallel to the ground? (adjacent to the angle) sin cos tan Rewatch

To find the component parallel to the ground (adjacent side) in a right triangle, you would use the cosine function. The cosine of an angle in a right triangle is defined as the ratio of the length of the adjacent side to the length of the hypotenuse.<br /><br />So, the correct answer is:<br />$cos$