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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
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