Math, asked by rakshanakeeran, 9 months ago

please answer me I will mark you as brianlist answer . but with correct answer and step by step please answer

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Answered by rbarman533

2

Answer:

angle B=40⁰ and C =180⁰-60⁰+40⁰=80⁰

1/2 of B and C =20⁰&40⁰

so, O =180⁰-20⁰+40⁰

O=120⁰

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