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-   -   what is the formula for Tan (A)-Tan (B) ? (http://mymathforum.com/calculus/19703-what-formula-tan-tan-b.html)

silvercats June 6th, 2011 08:42 AM

what is the formula for Tan (A)-Tan (B) ?
 
what is the formula for Tan (A)-Tan (B) and Cot (A) - Cot(B)

soroban June 6th, 2011 09:01 AM

Re: what is the formula for Tan (A)-Tan (B) ?
 
Hello, silvercats!

Quote:









Are these what you're looking for?


silvercats June 6th, 2011 05:56 PM

Re: what is the formula for Tan (A)-Tan (B) ?
 
Quote:

Originally Posted by soroban
Hello, silvercats!








Are these what you're looking for?


I think ,NO. Like Cos(A)+Cos(B)=2 Cos[(A+B)/2].Cos [(A-B)/2],there is a formula for Tan too.not just sin/cos thing

johnny June 6th, 2011 07:34 PM

tan A - tan B = (1 + tan A tan B)tan(A - B)

silvercats June 7th, 2011 01:10 AM

Re: what is the formula for Tan (A)-Tan (B) ?
 
That is what I as looking for.Thanks for both of you :)


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