“There are two types of people who will tell you that you cannot make a difference in this world: those who are afraid to try and those who are afraid you will succeed.” —**Ray Goforth**

# Lecture - 1 Chapter 2 Inverse Trigonometric Functions

**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 \text{arcsec}(x)

\cosec^{-1}x or \text{arccosec}(x)

\cot^{-1}x or \text{arccot}(x)

**Download GeoGebra Files Used in this Lecture**

Trigonometry Unit Circle (60 KB)

Inverse Trigonometry Ranges (20 KB)