Math Class IX Chapter 11 - Trigonometric Functions and their Graphs

1. What is the period of a function? Why trigonometric functions are periodic? 2. Show that cosine function is a periodic function. Find its period? 3. Range of secant and cosecant functions does not contain values between –1 and 1. Illustrate graphically? The range of both sine and cosine functions is the set of real numbers? Period of a trigonometric function is any real number which, when added to the original measure of the angle, gives the same value of the function?


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