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∠ADC > ∠ADB if AC > AB and AD is bisector of ∠A
Step-by-step explanation:
given that AC > AB
in Δ ABC
AC > AB
=> ∠B > ∠C as greater sides has opposite greater angles
AD bisect ∠A
=> ∠BAD = ∠CAD = ∠A/1
in Δ ABD
∠B + ∠ADB + ∠BAD = 180°
in Δ ACD
∠C + ∠ADC + ∠CAD = 180°
Equating
∠B + ∠ADB + ∠BAD = ∠C + ∠ADC + ∠CAD
as ∠BAD = ∠CAD
=> ∠B + ∠ADB = ∠C + ∠ADC
=> ∠B - ∠C = ∠ADC - ∠ADB
as ∠B > ∠C => ∠ADC > ∠ADB
Hence Proved
QED
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In the given triangle ABC, AB> AC and AD is the bisector of angle BAC
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