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11 June, 12:15

Does the equation sin2 (x) - 4 = 0 have any solutions? Explain.

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  1. 11 June, 14:20
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    Isolate sin (x) by adding 4 and taking the square root of both sides.

    State that sin (x) = 2 or sin (x) = - 2. State that - 2 and 2 are undefined values of the inverse sine function. There are no solutions because - 2 and 2 are not in the domain of the function.
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