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June 6th, 2011, 08:42 AM   #1
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what is the formula for Tan (A)-Tan (B) ?

what is the formula for Tan (A)-Tan (B) and Cot (A) - Cot(B)
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June 6th, 2011, 09:01 AM   #2
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Re: what is the formula for Tan (A)-Tan (B) ?

Hello, silvercats!

Quote:







Are these what you're looking for?

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June 6th, 2011, 05:56 PM   #3
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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
Thanks from asta
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June 6th, 2011, 07:34 PM   #4
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tan A - tan B = (1 + tan A tan B)tan(A - B)
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June 7th, 2011, 01:10 AM   #5
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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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