Friday

April 25, 2014

April 25, 2014

Posted by **lisa** on Monday, November 13, 2006 at 8:21pm.

Use 3.1459

We can't draw graphs for you here, but you can certainly make a table of values of x and corresponding values of y, and draw the graph yourself. you might save a little time by recognizing that

sin (x - pi/4) =

[(sqrt 2)sin x]/2 - [(sqrt 2)cos x]/2

When x = pi/4, y = 0.

When x=0, y = -(sqrt 2)/2

You can also just plot a sine wave on shifted coordinates, treating x = pi/4 y = 0 as the new origin

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