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March 26, 2017

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The terminal side of theta lies on a given line in the specified quadrant. Find the values of the six trigonometric functions of theta by finding a point on the line.

y= -3/2x in quadrant 4

  • Pre-calculus - ,

    let x=2, then y = (-3/2)(2) = -3
    then r^2 = 2^2 + (-3)^2 = 13
    r = √13

    sinØ = -3/√13 , cscØ = -√13/3
    cosØ = 2/√13 , secØ = √13/2
    tanØ = -3/2 , cotØ = -2/3

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