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Let A (-2, 0) and B(2, 0), then the numb...

Let A (-2, 0) and B(2, 0), then the number of integral values of a, `a in [-10, 10] for which line segment AB subtends an acute angle at point C (a, a+1) is

A

15

B

17

C

19

D

21

Text Solution

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The correct Answer is:
C
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