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If O be the origin and OP=r and OP makes...

If O be the origin and OP=r and OP makes an angle theta with the positive direction of x-axis and lies in the XY plane find the coordinates of P.

A

`(r cos alpha, 0,r sin alpha)`

B

`(0,0,r sin alpha)`

C

`(0,0,r cos alpha)`

D

`(r cos alpha,0,0)`

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The correct Answer is:
A
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