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    I have just been doing some trig questions and I was wondering if on those graphical calculators you can find all the intersections points on Cosine and sine graphs. I can solve these manually but of course it would be good for checking. It would be greatly appreciated if anyone can shed some light on this before I go out and buy one.
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    Yes, you can.
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    What in the world do you mean by intersection points?
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    (Original post by StephenP91)
    What in the world do you mean by intersection points?
    Say, for example, tan2x=3 in the range 0<x<360 . If you drew y=tan2x and y=3 you would see that there would be points where the two intersect
 
 
 
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Updated: April 13, 2011
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