description
Introduction
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As we studied in the last chapter, Functions is a special relation in which no two distinct ordered pairs have same first element i.e if y=f(x), then for one value of x we cannot have two values of y.
Also we studied that trignometric ratios behave like trignometric functions. A function must be invertible for finding it's Inverse. In this chapter, we shall study about the restrictions on domains and ranges of trigonometric functions which ensure the existence of their inverses and observe their behaviour through graphical representations.
