Viewing insights from 2022 AMC 12B Problem 14 that are similar (thus shared) with only this insight from Codeforces 1846D: Rudolph and Christmas Tree: -Notice there are only two cases: either the triangle is completely alone or it is overlapped with another triangle. In the second case, the remaining area is a trapezoid... by fluffy_mango
- tan(A+B) = (tan(A) + tan(B))/(1 - tan(A)*tan(B)) by Richie
- Note that ∠ABO < π/2 and∠CBO < π/2 by Richie
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