S sadpwner Member Joined Feb 12, 2013 Messages 242 Gender Male HSC N/A Mar 29, 2015 #1 Do I have to say it's sinx/cosx and prove it from there or can I just use the identity that it equals one?
Do I have to say it's sinx/cosx and prove it from there or can I just use the identity that it equals one?
B braintic Well-Known Member Joined Jan 20, 2011 Messages 2,109 Gender Undisclosed HSC N/A Mar 29, 2015 #2 sadpwner said: Do I have to say it's sinx/cosx and prove it from there or can I just use the identity that it equals one? Click to expand... It is an identity in its own right.
sadpwner said: Do I have to say it's sinx/cosx and prove it from there or can I just use the identity that it equals one? Click to expand... It is an identity in its own right.
