45. If the distance between point A(2, 2) and B( 5.) is 5 then the value of ris
a) 4 b) 5 c) 7 d) 6
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Answer:
d) 6
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We have,
P=(2,2),Q=(5,x) and PQ=5
We know that,
⇒ d² =(x2 - x1)² + (y2 - y1)²
Therefore,
⇒ PQ² =(5−2)²+(x−2)²
⇒5² =(3)² +(x−2)²
⇒25=9+(x−2)²
⇒(x−2)² =16
x−2=±4
d) x=6 is the correct option.
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