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what is the relation between speeds of points A and B in the given figure. Slender rod is constrained to move vertically down and wedge is constrained to move along horizontal

A

`a_B=a_A Cot theta`

B

`a_B=a_A Tan theta`

C

`a_A = a_B Cos theta`

D

`a_B = a_A sec theta`

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The correct Answer is:
B
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