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Math Help - Trinagle, using Sin to solve

  1. #1
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    Trinagle, using Sin to solve

    Hi,
    I was confused about how to use Sine, Cosine, and Tangent a bit.
    So I thought of using like a regular triangle like this.
    Trinagle, using Sin to solve-triangle-calculus.png
    So I want to find what sin Ө=
    But I'm kind of confused
    Sin is opposite over hypotenuse (Using SOHCAHTOA)
    So the opposite has no numbers, and the hypotenuse is 1
    So then I used cosine Ө = adjecent over hypotenuse, which is x/1, which got me no where.

    Can someone explain to me on how I could find what sin Ө equals.
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  2. #2
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    Re: Trinagle, using Sin to solve

    Pythagoras.
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