The pedal of a bike has a radius of 20cm. The centre of the pedal is 30cm...

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Llllll H

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...above ground level.? The pedal of a bike has a radius of 20cm. The centre of the pedal is 30cm above ground level. Assume that the bike is pedalled at 15 cycles per minute.

a) Draw a wave to represent two complete rotations of the pedal.

b) Label the quarters of one complete wavelenght.


YOU DO NOT HAVE TO DRAW THE GRAPH BUT PLEASE HELP ME THROUGH DRAWING IT; LIKE GIVEING ME THE EQAUTION OR SOMETHING
 
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