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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

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The correct Answer is:
C
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AAKASH SERIES-PROPERTIES OF TRIANGLES-EXERCISE - 1
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  18. A flag staff of length 10 mt stands on a tower if from a point on the ...

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  19. The shadow of a tower standing on a level plane is found to be 50 mt l...

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