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Math Help - cos, sin, theta range

  1. #1
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    cos, sin, theta range

    cos, sin, theta range-1.gifcos, sin, theta range-2.gif

    Thanks
    James
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  2. #2
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    Re: cos, sin, theta range

    cos, sin, theta range-3.gif

    and this.

    Thanks,
    James
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  3. #3
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    Re: cos, sin, theta range

    Just remember the quadrants where a particular trigonometric ratio is positive. We know that
    In First quadrant : all trigonometric ratios are positive
    In second quadrant : Sine and co-secant are positive and rest all trigonometric ratios are negative
    In Third quadrant : tangent and cotangent are positive and rest all trigonometric ratios are negative
    In Fourth quadrant : cosine and secant are positive and rest all trigonometric ratios are negative
    I think that should help you out.
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