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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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