cos(90–A) and sinA are

The trigonometric identities cos(90-A) and sinA are equal.

Here's the step by step explanation:

1. The co-function identity of trigonometry states that the cosine of an angle is equal to the sine of its complementary angle. In other words, cos(θ) = sin(90 - θ).

2. So, if we replace θ with A, we get cos(A) = sin(90 - A).

3. Therefore, cos(90 - A) = sinA.

This means that the cosine of (90 degrees minus angle A) is equal to the sine of angle A.