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View Full Version : Find the altitude of an isosceles triangle

wannabehermione
Feb 2, 2010, 10:40 PM
Base is 10. Angles are 2 18 degree angles, and one 144 degreee angle... how do I find the altitude?
Sitkadiver
Feb 2, 2010, 11:18 PM
OK, one of the math guys is going to totally grill me if I'm wrong, so keep in mind school was a long time ago for me...

Tan = Opp/adj = h/5 = tan 18 = 1.6245

I think...