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July 22, 2014

July 22, 2014

Posted by **Kate** on Saturday, July 23, 2011 at 10:34am.

y = sin2x:

y = cos(3/2)x:

y = 2sin(1/2)x:

y = 1.5cos0.25x:

- Math -
**Reiny**, Saturday, July 23, 2011 at 11:26amThe period of a sine or cosine curve

= 360°/k , where k is the coeffiecient of the angle

e.g. your 1st question

y = sin 2x , k = 2

period = 360°/2

= 180°

or in radians:

period = 2π/k = 2π/2 = π

do the others the same way.

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