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Number of values of x in R which satisf...

Number of values of ` x in R` which satisfy the equation `cos(pisqrt(x-4))cos(pisqrtx)=1` is

A

1

B

0

C

2

D

none of these

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The correct Answer is:
A
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PATHFINDER-TRIGONOMETRIC EQUATION AND INVERSE-QUESTION BANK
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