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    In △ABC,BD⊥AC at D and ∠DBC=44∘44^∘44∘​. E is a point on BC such that ∠CAE=34∘34^∘34∘​. What is the measure of ∠AEB ?
    Question

    In △ABC,BD⊥AC at D and ∠DBC=4444^∘​. E is a point on BC such that ∠CAE=3434^∘​. What is the measure of ∠AEB ?

    A.

    7878^∘

    B.

    8080^∘

    C.

    5656^∘​​

    D.

    4646^∘

    Correct option is B

    Given:

    In ABC\triangle ABCBDACBD \perp AC​ at D

    DBC=44o\angle DBC = 44^o

    Formula Used:

    Sum of a triangle = 180o180^o​​

    Solution:

    Let the line BD and AE intersect at O as shown in the figure

    In AOD\triangle AOD​​

    CAE=34o and BDA=90o\angle CAE = 34^o \text{ and }\angle BDA = 90^o​​

    Then AOD=180o(90o+34o)\angle AOD = 180^o - ( 90^o + 34^o) ​   

    AOD=56o \angle AOD= 56^o​​

    BOE=AOD=56o\angle BOE = \angle AOD = 56^o​ ( Vertically opposite angles )

    In BOE\triangle BOE​​

    DBC=44o\angle DBC = 44^o​​

    BOE=56o\angle BOE = 56^o​​

    AEB=180o(44o+56o)\angle AEB = 180^o - ( 44^o + 56^o)​​

    =180o100o= 180^o - 100^o​​

    =80o= 80^o​​

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