Chapter 18, Problem 18ICA

Write a program that asks the user to enter the length of the hypotenuse, opposite, and adjacent sides of a right triangle with respect to an angle (θ). After the user has entered all three values. a menu should pop up asking if the user wants to calculate sin(θ), cos(θ), tan(θ), cot(θ), cosec(θ), or sec(θ). The program should display a final message, such as, “For a right triangle of sides h, o and a, sin (θ) = 0.371, “where h, o, and a are replaced by the actual lengths entered by the user, displayed to one decimal place. If the user enters lengths that do not work with a right triangle, an error message should appear and the program should terminate. If the user closes the menu instead of making a valid selection, an appropriate error message should appear and the program should terminate. You may use if statements and/or switch-case statements as appropriate.