05-01-2020
Mathematics

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Hi guys, need help for question 3 please!!! Struggling so much

Hi guys need help for question 3 please Struggling so much class=

Respuesta :

kenlingdad kenlingdad

05-01-2020

Answer:

Step-by-step explanation:

OA=OB=OC

∠A = ∠1

∠B = ∠2

∠A + ∠B + ∠C = 180°

∠A + ∠B + (∠1 + ∠2) = 180°

∠1 + ∠2 + (∠1 + ∠2) = 180° ... subtitution

2 x (∠1 + ∠2) = 180°

∠1 + ∠2 = 90°

∠ACB = 90°

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