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April 23, 2014

April 23, 2014

Posted by **tori** on Friday, February 17, 2012 at 3:13pm.

- geometry -
**tori**, Friday, February 17, 2012 at 3:30pmHELPP!!

- geometry -
**Steve**, Friday, February 17, 2012 at 3:46pmDraw a triangle ABC with AB the base, and C the vertex.

You can see that C can be acute or obtuse, allowing two triangles to be constructed with base = 10 angle A=53°, and a=7.

That can also be see from the law of cosines:

c^2 = a^2 + b^2 - 2ab*cosC

cosC can be positive or negative, depending on whether C is acute or obtuse.

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