Question

Trigonometry

Reference Angles and Triangles
If θ is an acute angle in standard position and B (-3, 4) is a point on the terminal side of the angle, what is the value of sin θ?

Answer 1

⅘ or 0.8

Explanation:

Hypotenuse² = 3² + 4²

Hypotenuse = 5

Sin(θ) = 4/5