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A point on the periphery of a rotating d...

A point on the periphery of a rotating disc has its acceleration vector making angle of `30^(@)` with the velocity . The ratio `(a_(c)//a_(t) (a_(c)` "is centripetal acceleration and `a_(1)` is tangential acceleration ") equals

A

`sin30^@`

B

`cos 30^@`

C

`tan 30^@`

D

none of these

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The correct Answer is:
C
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