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How to solve arcsin arctan..etc

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    how? i know that arcsin is the inverse of sin..etc but how do you solve them>?
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    (Original post by TheWolf)
    how? i know that arcsin is the inverse of sin..etc but how do you solve them>?
    If you give me an examle of a question, i will TRY to help
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    (Original post by Silly Sally)
    If you give me an examle of a question, i will TRY to help

    ehh dunno arcsin -0.5?
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    Actually i found a question from the P2 mock paper:

    arctan x = 1
    tan^-1 x = 1
    x = tan1
    x= 1.557407725... radians

    Does that make any sense? You're basically using inverse - it is like normal trig, but instead of converting tanx ---> arctan to find x, we are doing the opposite.
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    (Original post by TheWolf)
    ehh dunno arcsin -0.5?
    Let y = arcsin(-1/2). Then sin(y) = -1/2 so y = -pi/6. Remember that arcsin of anything is between -pi/2 and pi/2.
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    why use your calculator?
Updated: June 20, 2004
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