Y1 Pure, Chapter 9:

Trigonometric ratios

Y1 Pure Chp9 KO.pdf

Knowledge organiser

Edexcel AS level - P1 Ch9 - Trig Ratios.pdf

Textbook chapter

Y1 Pure Chp9 Solutions.pdf

PMT solutions

Y1 Pure 9.1

Cosine rule

Using the cosine rule

EXTENSION, proof of the cosine rule

Y1 Pure 9.2

Sine rule

Using the sine rule

Ambiguous cases (two possible triangles)

EXTENSION, proof of the sine rule

Y1 Pure 9.3

Area of triangles

Finding the area of non-RA triangles

EXTENSION, proof of area of a triangle = ½ absinC

Y1 Pure 9.4

Solving triangle problems

Find all the missing sides and angles of a triangle

Trig in context: the canoe problem

Y1 Pure 9.5

Trig graphs

Sketching sin(x), cos(x) & tan(x) from the unit circle

The period of y = sin(x), y = cos(x) and y = tan(x)

Quickly sketching y = sin(x) in degrees

+E3:07-08 ( cos(x) & tan(x))

Y1 Pure 9.6

Transforming trig graphs

Beginning an investigation into transformations

+B9:02-04 (translations)

y = kf(x)

+B9:06-07 ('stretches')

y = -f(x)

+B9:09-10 (reflections)

The period of transformed trig graphs

State the period of the transformed trig graph

Period and amplitude

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