Year 12/AS Pure Chapter 9.4 (Trigonometric Ratios)

The concluding subchapter on trigonometric ratios explores the graphs of the functions sine, cosine and tangent. We then see how knowledge of these graphs and their properties enables us to transform their graphs using the techniques we developed in Chapter 4.

Introduction: 00:00

Solution to Warm-Up Q1: 1:08
Solution to Warm-Up Q2: 4:25
Solution to Warm-Up Q3: 7:21
Solution to Warm-Up Q4: 9:29

The graph of y = sinx: 11:23
The graph of y = cosx: 16:47
The graph of y = tanx: 21:26

Worked Example 1: 27:17
Worked Example 2: 29:43
Worked Example 3: 34:31
Worked Example 4: 39:19

Suggested Exercises: 41:58

[MrBaileyMaths]

Timestamps for smartphones and tablets:

Introduction: 00:00

Solution to Warm-Up Q1: 1:08
Solution to Warm-Up Q2: 4:25
Solution to Warm-Up Q3: 7:21
Solution to Warm-Up Q4: 9:29

The graph of y = sinx: 11:23
The graph of y = cosx: 16:47
The graph of y = tanx: 21:26

Worked Example 1: 27:17
Worked Example 2: 29:43
Worked Example 3: 34:31
Worked Example 4: 39:19

Suggested Exercises: 41:58