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Omni-MATH / Let ABCD be an isosceles trapezoid with AD=BC=255 and AB=128. Let M be the midpoint of CD and let N be the foot of the perpendicular from A to CD. If ∠MBC=90^(∘), compute tan∠NBM. · Discussion

Discussing Let ABCD be an isosceles trapezoid with AD=BC=255 and AB=128. Let M be the midpoint of CD and let N be the foot of the perpendicular from A to CD. If ∠MBC=90^(∘), compute tan∠NBM. · Omni-MATH

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