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If sin alpha cos beta=-(1)/(2), then cos...

If `sin alpha cos beta=-(1)/(2)`, then `cos alpha sin beta` may be belong to

A

`[-(1)/(2),(1)/(2)]`

B

`[-(1)/(2),0]`

C

`[0,(1)/(2)]`

D

`[(1)/(2),1]`

Text Solution

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The correct Answer is:
A
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