In triangle ABC, if C = 90°. So choose the correct option.

Correct option is C

Given:

In triangle ABC, if C = 90°.

​Formula Used:​

Using trigonometric identities:
sin(90° - $$\theta$$​) = cos $$\theta$$​
cos(90° - $$\theta$$​) = sin $$\theta$$​

Solution:

In a right-angled triangle:

The sum of the angles in a triangle is 180°. Since C = 90°, we have:

A + B = 90°

B = 90° - A.

Since B = 90° - A,

​$$\sin B = \sin(90^\circ - A) = \cos A$$​​

$$\sin B = \cos A$$

Thus, the correct answer is (c).