Question

The point P(21, 28) is on the terminal side of θ. Evaluate sin θ.

Answer 1

If you're ready, I'll guide you step by step.

Answer 2

I'm ready

Answer 3

As you're aware, there are four quadrants.

Step 1: Locate the quadrant of the terminal arm

Answer 4

Can you show me where the point (21, 28) would be located on the plane?

Answer 5

I know it would be in quadrant I

Answer 6

Alright so then we have

Do you see the right triangle? Do you understand thus far?