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In a triangle ABC, cos A+ cos B+cos C...

In a triangle ABC, `cos A+ cos B+cos C`

A

`1+(r)/(R)`

B

`(R)/(r)`

C

`1+(R)/(r)`

D

`(r)/(R)`

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The correct Answer is:
a
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MTG-WBJEE-SOLUTION OF TRIANGLES-WB JEE (Previous Years Questions) CATEGORY 2: Single Option Correct Type
  1. In a triangle ABC, cos A+ cos B+cos C

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  2. In a triangle ABC , let angleC=(pi)/2. If r is the in-radius and R is ...

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