Question:

Pre-calculus question?

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csc 45º x tan 60º

My process:

sin = √2 / 2

so csc = 1/ √2 / 2

times tan of 60º = √3/2 / 1/2

The answer is √6, but how?

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  1. csc45 is equal to inverse sin

    sin45=√2 / 2

    therefore csc45=2 / √2

    tan60=√3 / 1

    (2 / √2) (√3 / 1)

    2√3 / √2

    to get the radical out from the denominator

    mulitply by the square root of two

    √2 (2√3 / √2)

    2√6 / 2

    the two's cancel out and you're left with √6

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