Can someone help me solve this:
tan(a-b)
cosa = -4/5 Lies in Quadrant 3
sinb = 1/3 Lies in Quadrant 1
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Need help with Trig Sum Formulas Question 
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Need help with Trig Sum Formulas Question
by gmorrow2 on Fri Mar 26, 2010 11:55 pm
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Re: Need help with Trig Sum Formulas Question 
by mathnoob on Sat Mar 27, 2010 11:54 am
just plug into the angle diff formula for tan: http://oakroadsystems.com/twt/sumdiff.htm#TanSum
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