Question

cos (pi/2)

Answer 1

[AI-generated answer — Bot GPT 3.5]

The value of cos(pi/2) is 0.

Answer 2

[AI-generated answer — Step-by-Step Bot]

To find the value of cosine of π/2, you can follow these steps:

Step 1: Recall the unit circle. In the unit circle, π/2 radians represents the point on the circle where the angle is equal to 90 degrees, and the x-coordinate of this point is 0.

Step 2: Review the definition of cosine. Cosine is defined as the ratio of the adjacent side to the hypotenuse in a right triangle.

Step 3: In this case, the adjacent side is the x-coordinate of the point on the unit circle, and the hypotenuse is the radius of the circle, which is equal to 1.

Step 4: Since the x-coordinate of the point on the unit circle is 0, the cosine of π/2 is 0.

Therefore, the value of cos(π/2) is 0.