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IF in a Delta ABC, r3=r1+r2+r, then angl...

IF in a `Delta ABC, r_3=r_1+r_2+r`, then `angle A+ angle B=`

A

`120^(@)`

B

`100^(@)`

C

`90^(@)`

D

`80^(@)`

Text Solution

Verified by Experts

The correct Answer is:
C
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