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    Hi all.... a couple of minor queries that have been bugging me!

    1) Something is going on with my calculator and trig functions.

    As an example:

    When I put in.... sin(pi/2) = 0.02741

    But yet the example I am working though has the answer = 1. I have seen these contrasting answers also with online sci calculators.

    I know the answer should be 1, so what is going on with my calculator (Casio fx-83GT plus)?!?

    2) From a pure maths perspective, when you graph a function, whatever the x-axis is labelled as ie) usually x but other times you see t or s, then strictly speaking should the y-axis always instead be labelled f(x) or f(t) or f(s), to denote the fact that it is a function of.......?

    I know quite often you will see the label y=f(x)= x2 + 3 for example placed on the graphed function itself.

    Quite often you still see the axis labeled as just the y-axis, but I have seen other examples where they are a bit more rigorous with their labeling.

    Thoughts/opinions?
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    (Original post by Science hopeful)
    Hi all.... a couple of minor queries that have been bugging me!

    1) Something is going on with my calculator and trig functions.

    As an example:

    When I put in.... sin(pi/2) = 0.02741

    But yet the example I am working though has the answer = 1. I have seen these contrasting answers also with online sci calculators.
    You're in degree mode. Switch your calculator to radian mode.
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    DOH!... Cant believe I didn't think of that!

    Cheers!
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    No worries.
 
 
 
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