1. Sep 25, 2005 #1

   vitaly

   

   I'm having problems finding whether or not a trig function is discontinuous or continuous. Besides graphing, I don't understand how you can tell. How do you know if a trig function is continuous or not, for the 6 basic functions?

    

   vitaly, Sep 25, 2005
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3. Sep 25, 2005 #2

   Tom Mattson

   

   Staff Emeritus

   Science Advisor

   Gold Member

   You know that sin(x) and cos(x) are continuous, right? Well, the other trig functions are just made from sines and cosines. For example tan(x) is just sin(x) over cos(x). So tan(x) is going to be discontinuous whenever its denominator is zero. You can similarly analyze the other trig functions.

    

   Tom Mattson, Sep 25, 2005

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