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Prove Isosceles


Best Answer bonanova, 26 April 2013 - 08:28 AM

Spoiler for Sines and Cosines
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#1 BMAD

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Posted 25 April 2013 - 10:01 PM

Point P is inside triangle.gifABC, and is such that angle.gifPAC = 18°, angle.gifPCA = 57°, angle.gifPAB = 24°, and angle.gifPBA = 27°.

p136.gif

 

 

 

Show that triangle.gifABC is isosceles.

 


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#2 bonanova

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Posted 26 April 2013 - 08:28 AM   Best Answer

Spoiler for Sines and Cosines

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The greatest challenge to any thinker is stating the problem in a way that will allow a solution.
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