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Calculator problem?

So I'm currently doing a C3 paper w/ a Simpson's rule question and every time I've subbed an x value I come out with the wrong value:

ImageUploadedByStudent Room1493242848.511000.jpg


Is the calculator playing up or am I? :/



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Reply 1
Original post by nemanuel96
So I'm currently doing a C3 paper w/ a Simpson's rule question and every time I've subbed an x value I come out with the wrong value:

ImageUploadedByStudent Room1493242848.511000.jpg


Is the calculator playing up or am I? :/



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Is it in radians or degrees?
Reply 2
Original post by SGHD26716
Is it in radians or degrees?


It's in degrees mate


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Reply 3
Original post by nemanuel96
It's in degrees mate


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All integration with trigonometric functions is ALWAYS done in radians.
Reply 4
Original post by SGHD26716
All integration with trigonometric functions is ALWAYS done in radians.


Oh wow, I'm such a numpty lmao. Thanks mate.


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Reply 5
Original post by nemanuel96
Oh wow, I'm such a numpty lmao. Thanks mate.


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No worries. Just as a hint, if you are putting in values like pi/4 and pi/2 into trigonometric functions, it's 99.9% likely you need to be in radians.

Good luck.

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