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If r : R r1 = 2: 5 : 12 then angle A...

If r : R ` r_1 = 2: 5 : 12` then ` angle A =`

A

` 30 ^(@) `

B

` 45 ^(@) `

C

` 60 ^(@)`

D

` 90 ^(@) `

Text Solution

Verified by Experts

The correct Answer is:
D
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