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If the angles of a triangle are in the r...

If the angles of a triangle are in the ratio `1:2:7`, then the ratio of the longest side to the smallest side is

A

` sqrt( 5) + 1 : sqrt 5-1`

B

` sqrt( 5) + 2: sqrt5-2`

C

` sqrt5+ 3: sqrt5-3`

D

` sqrt 5+ 4 : sqrt5-4`

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The correct Answer is:
A
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