Question

Unit 8: Right triangles & Trigonometry Homework 4: Trigonometric Missing Sides
Please help

Answer 1

#15 x ≈ 20.5

Explanation:

To find missing sides

1) find the reference angle

2) identify the information that is needed ( what are you given - opposite side, adjacent side, hypotenuse)

3) use that information to set up the trigonometric equation

#10

angle is 64, opposite side is 42, adjacent side is x

so you use tangent

tangent 64 = 42/x multiply by x

x tangent 64 = 42 divide by tangent 64

x = 42/tangent 64

x ≈ 20.5