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I need to find the cosine or sine formula for this graph ? Please help

I need to find the cosine or sine formula for this graph ? Please help-example-1

1 Answer

3 votes

3\sin\left(x+\frac\pi8\right)

or


3\cos\left(x-\frac\pi8\right)

should do it.
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User Trung Duong
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