Explain in one or two sentences why

MATHEMATICS · Subjective · AP · Calculus BC · Parametric, Polar, and Vector-Valued Functions · Parametric, Polar, and Vector-Valued Functions

Problem

Explain in one or two sentences why, when finding the area of a region bounded by two polar curves that intersect twice, the calculation is typically written as the difference of two separate integrals taken over different θ\theta-intervals.

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