Question

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

Answer 1

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Answer 2

This is fairly straightforward


Sin = \(\large\frac{opposite}{hypotenuse}\)

We just need to find the hypotenuse

We know the side lengths based on the point location, so use Pythagorean Theorem to solve for c

c=hypotenuse
\(21^2+28^2=c^2\)