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Measure that angle V (Posted on 2005-10-24) Difficulty: 4 of 5
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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Solution SO WHAT- spoiler | Comment 1 of 7

sin(BAC/2)=1/4

sin(BAC)=2*1/4*sqrt(15/16)=.4841

BAC=arcsin (.4841 )  WHATEVER IT IS , LESS THAN 30

SO WHAT


  Posted by Ady TZIDON on 2005-10-24 13:44:33
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