Question

If tan A = `3/5` the value of sin² A + cos² A is ______.

Options

• `9/25`

• 1

• `9/16`

• `16/9`

Answer 1

If tan t A = `3/5` the value of sin² A + cos² A is 1.

Explanation:

According to the fundamental trigonometric identity, sin² A + cos² A = 1 for any angle A. The given value of tan A is extra information and does not affect this identity.