perplexus.info :: Just Math : Given Ratio, Find Sum

Given Ratio, Find Sum (Posted on 2008-01-21)

For a triangle ABC, Area/R=4. Find acosA+bcosB+ccosC.
Note:R is circumradius of triangle ABC.

See The Solution Submitted by Praneeth

Rating: 4.0000 (1 votes)

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re: Solution

| Comment 3 of 5 |

(In reply to Solution by Bractals)

You forgot to consider the case of Obtuse Angled Triangle.

Posted by Praneeth on 2008-01-22 01:29:02

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