What you have to multiply for addition/subtraction identity, I was thinking of getting cosB or sinB out. tan theta = cos (A+B) / sin (A+B) = cosAcosB - sinAsinB / sinAcosB + cosAsinB
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Originally Posted by Quan What you have to multiply for addition/subtraction identity, I was thinking of getting cosB or sinB out. tan theta = cos (A+B) / sin (A+B) = cosAcosB - sinAsinB / sinAcosB + cosAsinB First of all, use parenthesis. not Second, what are you asking for? Your question is very vague. -Dan
Originally Posted by topsquark First of all, use parenthesis. not Second, what are you asking for? Your question is very vague. -Dan Sorry, I'm looking for the addition / subtraction Identities for Tan Theta
Originally Posted by Quan Sorry, I'm looking for the addition / subtraction Identities for Tan Theta By the way, I missed this in the previous post: not the other way around. Now divide the numerator and denominator by : -Dan
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