perplexus.info :: Geometry : Measure that angle V

Measure that angle V (Posted on 2005-10-24)

A certain triangle ABC has D on AB and E on AC such that AD=DB=BC=CE and AE=ED. What is the measure of angle BAC?

See The Solution Submitted by Brian Smith

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re: SO WHAT- spoiler

| Comment 2 of 8 |

(In reply to SO WHAT- spoiler by Ady TZIDON)

On what basis do you say sin (BAC/2) = 1/4 ?

Posted by Charlie on 2005-10-24 13:50:04

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