SOLUTION: Would the identity to prove the sum/difference tangent formula be tanx=sinx/cosx?

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Question 1174716: Would the identity to prove the sum/difference tangent formula be tanx=sinx/cosx?
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
here's a reference in trig identities you might find useful.

https://www.purplemath.com/modules/idents.htm

the derivation is from tan(x + y) = sin(x + y) / cos(x + y) which i believe is because tangent = sine / cosine.

here's a proof on why tan(x + y) = sin(x + y) / cos(x + y)

https://socratic.org/questions/how-do-you-solve-tan-x-y-tan-x-tan-y-1-tan-x-tan-y#138400