Are there identities for inverse tangent? Can you verify them [the identities] for me? I know two of them: arctan(x)=arccot(1/x) arctan(x)=pi/2-arccot(x) What is the third one if the identity exist? And Why? Thank you in advance.
Last edited by Cbarker1; May 26th 2012 at 03:22 PM.
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STPM Further Mathematics T: 5.1 – Inverse Trigonometric Functions
Originally Posted by Cbarker1 Are there identities for inverse tangent? Can you verify them [the identities] for me? I know two of them: arctan(x)=arccot(1/x) arctan(x)=pi/2-arccot(x) What is the third one if the identity exist? And Why? Thank you in advance. For the first, let , then For the second, let , then
why there is a pi-arctan(x)=arctan(x)+arctan(x/2)
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