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Topics Discussed in this lecture:
All trigonometric functions are Many – one so we have to re-define their respective mappings in order to find inverse trigonometric functions.

In this lecture, you will learn the ranges of all inverse trigonometric functions with complete explanation:
\sin^{-1}x or arcsin(x)
\cos^{-1}x or arccos(x)
\tan^{-1}x or arctan(x)
\sec^{-1}x or arcsec(x)
\cosec^{-1}x or arccosec(x)
\cot^{-1}x or arccot(x)

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