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In Delta ABC, if r:R:r1=2:5:12, then A=...

In `Delta ABC, if r:R:r_1=2:5:12`, then A=

A

`45^@`

B

`60^@`

C

`30^@`

D

`90^@`

Text Solution

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The correct Answer is:
D
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  5. In Delta ABC, if a=13 ,b=14 , c=15, then r1=

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  7. In Delta ABC, if a=13, b=14, c=15 then r2=

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  8. In Delta ABC, if a=26, b=30 cos C=63//65, then the value of r2 is

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  9. In Delta ABC, if a=30, b=24, c= 18, then r3=

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  14. In Delta ABC, if r1=3, r2=10, r3=15 then c=

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