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    paw04's Avatar
    paw04 Posts: 1, Reputation: 1
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    #1

    Mar 15, 2007, 03:22 PM
    Trigonometric Equation
    Why is it if you entered in the calculator 2 in second function of sine, it's answer was error?Is it the same for cosine=2 and tangent=2?
    Nosnosna's Avatar
    Nosnosna Posts: 434, Reputation: 103
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    #2

    Mar 15, 2007, 03:45 PM
    Assuming that the second function of sine is the arcsine (inverse of the sine function, often written as sin^-1 even though it is not equal to 1/sin), then it gives an error because the value of the sine function is always between -1 and 1. The same is true of cosine, but not tangent. The tangent can have any real number for its value.
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