Another question i had was: If sin(alpha)=4/5 in quadrant 1 and cos(beta)=-11/12 in quadrant II, find Sin(alpha+beta) Tan(alpha+beta) Thats a LOT for the help.
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Originally Posted by aussiekid90 Another question i had was: If sin(alpha)=4/5 in quadrant 1 and cos(beta)=-11/12 in quadrant II, find Sin(alpha+beta) Tan(alpha+beta) Thats a LOT for the help. You could get fancy and use the sum of angles formulas, but I think it's easier just to find alpha and beta: is supposed to be 1st quadrant and, in fact, it is. which checks out as being in the 2nd quadrant. So: -Dan
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