State the exact value of cos 0. A diagram may help.
A) 1
B) 0
C) -1
D) undefined

Question

Quizplus · Accepted Answer

Cosine is defined as the ratio of the adjacent side to the hypotenuse in a right triangle. When the angle is 0 degrees, the adjacent side is equal to the hypotenuse, which means that the cosine of 0 is equal to 1.

A diagram of a right triangle with an angle of 0 degrees would show the adjacent and hypotenuse sides lining up perfectly, creating a flat line with no vertical component.

State the Exact Value of Cos 0