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24 Aug 2019, 08:10
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B
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Two circles, with centers at points (3, 7) and (−1, 4) and with radii 2 units and 7 units respectively, are drawn in the x − y plane. The number of common tangents that the circles have is
a) four.
b) one.
c) zero.
d) three.
a) four.
b) one.
c) zero.
d) three.
15 Sep 2019, 12:20
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the distance between the two centres is
sqrt[(3+1)^2+(7-4)^2]
=5
so the smaller circle will be inside the larger circle and will be touching it internally.
therefore no. of tangents possible is only 1.
So B
_______________________________________________________
"The price of the Victory is High but so are the rewards".
Please provide kudos if you like my post.
sqrt[(3+1)^2+(7-4)^2]
=5
so the smaller circle will be inside the larger circle and will be touching it internally.
therefore no. of tangents possible is only 1.
So B
_______________________________________________________
"The price of the Victory is High but so are the rewards".
Please provide kudos if you like my post.
