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Recurrence relation - what have I done wrong here?

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    • Thread Starter

    Edit: ****ing radians mode
    Mods close thread pls
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    (Original post by FusionNetworks)

    Question 5b.
    I begin by typing 1/5(1+arccos(0.4)), and get an answer of 13.48.....
    I know this is wrong, but not sure where ive messed up!
    Calculator in radians?

    That's because your calculator is in degrees. You should always use radians for these types of problems.
Updated: May 31, 2016
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