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Two particles start from the same point ...

Two particles start from the same point with different speeds but one moves along `y=a sin omega x` and other moves along curve `y=cos omegax`

A

they must collide after some time

B

they never collide with each other

C

they may collide at the point `P((pi)/(4omega),a/(sqrt(2)))`

D

they must collide at the point `P`

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(C)
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