# Answer on Trigonometry Question for needhelp

Question #11738

find the amplitude, period of the function and sketch its graph

1. y = cos2x

2. y= -3sin3x

3. y= 5cos(3x-pie/4)

1. y = cos2x

2. y= -3sin3x

3. y= 5cos(3x-pie/4)

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