Vilmacambra
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How to get the coordinates for y=cos(x-pi/4)
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Pangol
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(Original post by Vilmacambra)
How to get the coordinates for y=cos(x-pi/4)
Can you draw a regular y = cos(x) graph, with all of the appropriate points where the graph has maxima/minima/axis intersections? If so, do that first.

Then you have to recognise that the graph you want is this graph after a transformation. Can you see what the transformation is? Once you have that, all you have to do is adjust your original graph accordingly.
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Presto
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1) Draw the cos x graph.
2) Shift it pi/4 units to the right by adding pi/4 to the x intersections of cos x.
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