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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §5.7 The Fundamental Theorem and Its Applications, #37 · Calculus · Integrals

The distance … in Figure (b) is related to … by …

The distance $r$ in Figure (b) is related to $θ$ by $r =$ ______. Therefore the area of the thin triangle is $\frac{1}{2} r^{2} d θ =$ ______. Integration to $θ =$ ______ gives the total area $\frac{1}{2}$ .

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §5.7 The Fundamental Theorem and Its Applications, #37

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