graph sketching

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August 11th 2009, 02:08 AM
thereddevils

graph sketching

How to sketch the graph of $\sin x -3 \cos x$

i know i can do this : $\sin x -3 \cos x = \sqrt{10} \sin({\color{red}x - 71.6})$

How can i sketch this when the one in red is not $\theta$ or $2 \theta$

Thanks .
August 11th 2009, 03:55 AM
mr fantastic

Quote:

Originally Posted by thereddevils

How to sketch the graph of $\sin x -3 \cos x$

i know i can do this : $\sin x -3 \cos x = \sqrt{10} \sin({\color{red}x - 71.6})$

How can i sketch this when the one in red is not $\theta$ or $2 \theta$

Thanks .

Sketch the graph of $y = \sqrt{10} \sin({\color{red}x})$ . Then translate the graph by 71.6 units to the right.
August 11th 2009, 04:11 AM
thereddevils

Quote:

Originally Posted by mr fantastic

Sketch the graph of $y = \sqrt{10} \sin({\color{red}x})$ . Then translate the graph by 71.6 units to the right.

Thanks . Can u recommend me a useful online graphing software ?

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