1.

What is the value of 2 tan-1⁡x in terms of sin-1⁡?

A. sec-1⁡x
B. 2 sec-1⁡x
C. 2 sec-1⁡\((\sqrt{1+x^2})\)
D. sec-1⁡\((\sqrt{1+x^2})\)
Answer» D.


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