Need help with Trig Sum Formulas Question  TOPIC_SOLVED

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Need help with Trig Sum Formulas Question

Postby gmorrow2 on Fri Mar 26, 2010 11:55 pm

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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Re: Need help with Trig Sum Formulas Question  TOPIC_SOLVED

Postby 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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