Chapter : Inverse trigonometric Functions_part2
29 May 2023
Department
Course
Professor
One angle value
Content:
1. Basic formulae and the use of trigonometric idenes
2. Funcon conversions
3. Funcon inside a funcon
4. Sample problems
[Objecve: Student should be able to learn how to apply the basic methods
and understanding of inverse funcons.]
In the previous note we discussed about the inverse trigonometric funcons
and graphs. In this note we will discuss about easy ways to solves problems and
also, we will learn that if we know trigonometry, we don’t need to remember
the formulae.
There is just one method to answer any queson in inverse trigonometric
funcon.
Let’s understand the inverse trigonometric funcons rst with an example.
Let’s consider the funcon sin-1x.
What exactly does this mean? Well, sin-1x is an angle. And if we nd the sine of
this angle we get ‘x’.
So, let’s say θ = sin-1x, then sin θ = x.
Now we can use all the formulae of trigonometry to nd the values for the
other funcons.
And hence,
• cos θ =
• cosec θ =
• sec θ =
