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The angle of a right-angled triangle are...

The angle of a right-angled triangle are in AP. Then , find the ratio of the in-radius and the perimeter.

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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OBJECTIVE RD SHARMA ENGLISH-PROPERTIES OF TRIANGLES AND CIRCLES CONNECTED WITH THEM-Chapter Test
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  12. In a triangle ABC, cos A+cos B+cos C=

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  13. if A+ B + C = pi, and cos A = cos B cos C, show that 2 cot B cot C=1.

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  14. Prove that a(b^(2) + c^(2)) cos A + b(c^(2) + a^(2)) cos B + c(a^(2) +...

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  15. The sides of a triangle are x^2+x+1,2x+1,a n dx^2-1 . Prove that the g...

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  18. If a DeltaABC is right angled at B, then the diameter of the incircle ...

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