In the given figure, ABCD is a cyclic quadrilateral inscribed in a circle with centre O. CD is produced to E such that ADE = 75°.

Question

In the given figure, ABCD is a cyclic quadrilateral inscribed in a circle with centre O. CD is produced to E such that ADE = 75°. If ABO = 40°, then OAC =

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Eden 2 months 2021-07-27T22:11:59+00:00 1 Answers 1 views 0

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    2021-07-27T22:13:55+00:00

    Answer:

    ABCD is a cyclic quadrilateral with center O.

    Therefore OA=OA=OC are the radii of circle

    In △AOB, OA=OB, therefore

    ∠ABO=∠BAO=∠BAC=45∘  [Angles opposite to equal sides]

    ∠OCA− cannot be determined. Because

    AOC is a line, ∠AOC=180∘

    Step-by-step explanation:

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