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trig

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Find the 6 trigonometric function of teta if it's terminal side passes through the point(1,2)

  • trig -

    so you know that x (adjacent) is 1 and
    y (opposite) is 2

    Using Pythagoras we can find r (the hypotenuse)
    r^2 = 1^2 + 2^2 = 5
    r = √5

    now now simply use the definitions to form the 6 different trig ratios
    e.g.
    cos Ø = adj/hyp = 1/√5
    sec Ø = 1/cosØ = √5
    etc

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