In Exercises 522, prove the identity.arctan t = 1 2 arctan 2t 1 - t 2 , -1 6 t 6 1
Chapter 5, Problem 412(choose chapter or problem)
In Exercises 5-22, prove the identity.
\(\arctan t=\frac{1}{2} \arctan \frac{2 t}{1-t^{2}},-1<t<1\)
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