# Introduction In this lab, you will learn how to compute the inverse tangent (arctan) function in C programming. The lab covers three main steps: reading a real number from user input, using the `atan()` function to calculate the inverse tangent, and printing the result in radians. By the end of this lab, you will have a solid understanding of how to perform trigonometric calculations using C. The lab starts by teaching you how to read a real number from the user, which is essential for calculating the inverse tangent. Next, you will use the `atan()` function to compute the inverse tangent of the input number. Finally, you will print the result in radians, allowing you to interpret the output.
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