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If the angle of a right angled triangle ...

If the angle of a right angled triangle are in A.P. then the ratio of the in -radius and the perimeter, is

A

`(2-sqrt3):2sqrt3`

B

`1:8sqrt3(2+sqrt3)`

C

`(2+sqrt3):4sqrt3`

D

none of these

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The correct Answer is:
A
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