Foundations of Math 11 Name ___________________________

Chapter 3 Review

sin A=___________; cos A =___________; tan A = ___________

To recall these trigonometric ratios quickly, remember the acronym:

___ ___ ___ ___ ___ ___ ___ ___ ___

1. Find the measure of angle X, to the nearest degree.

(a) (b)

(c) (d)

Foundations of Math 11 Chapter 3 Review

(e) Find side WX (f) Find side EF

2. Calculate the length of CD to the

nearest tenth of a centimetre.

When you don’t have a right triangle, you may NOT use SOHCAHTOA. Why?

____________________________________________________________________________

SINE LAW:

COSINE LAW—when you are looking for a side:

COSINE LAW—when you are looking for an angle:

Foundations of Math 11 Chapter 3 Review

Practice

Foundations of Math 11 Chapter 3 Review

Practice