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Working with Reciprocal Trig Functions

There are no specific keys or menu items on the graphing calculator for the secant, cosecant and cotangent functions.  Consequently, you will have to use your knowledge of these functions when working with them on the graphing calculator.


Find the numerical value of sec 58ยบ 25'

First, remember that:     2

With the calculator set to Degree mode, enter the expression.  Remember that the symbols for degrees and minutes are found under 2nd APPS (ANGLE).

3   4 


Graph sec(x)

           Enter the function.                      Set the MODE to Radian.                    Choose ZOOM #7 ZTrig
5       6       7


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