Question

Find the exact value of the trigonometric function at the given real number. cos (-π/2)

Answer 1

The exact value of cos(-π/2) is 0.

Step-by-step explanation:

The cosine function represents the ratio of the adjacent side to the hypotenuse in a right triangle. In the given question, cos(-π/2) can be simplified to cos(-90°), which equals 0. Therefore, the exact value of cos(-π/2) is 0.