Using Sine graphs

· In questions on papers you will be asked to use Sine graphs for

different things:

1. Using the sine graph estimate the value of (an x value). For this

you simply read off the graph where the x value is and write down

roughly what the y value is

2. Using the sine graph estimate the value of (a y value). Like the

first question simply read off the graph, except estimate where the

y value is, then estimate what the x value is using this reading.

3. Here is the line y=Sinx. Using this graph sketch the line y=3Sin

(2x). This is the same as transforming graphs. The 3 in front of the

y tells you to multiply the y values by 3, and the 2 in front of the x

tells you to half the values of x.…read more

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