YR 10 S1 Cosine Curve

1. able to identify the shape of cosine curve from 'desmos' graphing,

2. able to recognise the period and amplitude.

​Steps to Success:

1. students will be able to sketch the graph of cosine,

2. students will be to discover the properties of cosine curve.

Lesson Objectives:

TOPIC: GRAPH OF TRIGONOMETRY

Draw

Draw something that is related to Monday's lesson.

Labelling

Label correctly

Drag labels to their correct position on the image

y=sinx

minimum point

maximum point

period

y=2sinx

amplitude

1. USING Desmos, observe and list out the properties of Cosine Curve.

2. similarities of Sine and Cosine.

3. Difference(s) of Sine and Cosine.

NOW, we will closely look at

COSINE CURVE

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Draw

Sketch y = cos x

Draw

Sketch y = 2cos x

Draw

Sketch y = cos x

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​LOOKING AT AMPLITUDE......

Fill in the Blank

WHAT IS THE AMPLITUDE FOR $$Y=2COS\ 3X$$

Fill in the Blank

WHAT IS THE PERIOD FOR $$Y=3COS\ X$$

Fill in the Blank

WHAT IS THE MAXIMUM VALUE OF Y=3COS 2X+1

Fill in the Blank

WHAT IS THE MINIMUM VALUE OF Y=3 COS2X -2

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Open Ended

For the equation of y = a cos bx + c, state what 'a ', 'b ' and 'c' denotes

​SINE AND COSINE USED TO MODEL THESE ELECTROMAGNETIC WAVES