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Math Help - Area Expressions in a Triangle/Circle

  1. #1
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    Area Expressions in a Triangle/Circle



    Can someone help me determine how to find expressions for the Areas A and B (with respect to theta)?

    I understand how to find the area of triangle POR but I'm having trouble see how to find the area of A.
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  2. #2
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    Quote Originally Posted by ty2391 View Post


    Can someone help me determine how to find expressions for the Areas A and B (with respect to theta)?

    I understand how to find the area of triangle POR but I'm having trouble see how to find the area of A.
    Im presuming that this is from a segment of a circle

    \therefore OR = OP

    So then use the equation for Area of a triangle and divide it by two to get an expression for B in terms of \theta

    As for A i cant remember my C2 too well, but im sure you use the formula along the lines of \theta \cdot r^2 \cdot \frac{1}{2}
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  3. #3
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    Total area of sector - area of triangle POR.
    Remember a scetor is theta/360 of a circle (if theta is in degrees)
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