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Question

In the given figure, AEBD, ACED and AB=AC. Find a.
176587_c561d8fa5be14531aefd1b63b5514f1a.png

A
63o
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B
64o
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C
62o
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D
None of the above
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Solution

The correct option is A 64o
Here, EDC=58 (Vertically opposite angles)
Given AECD so,
c=EDC=58 [Corresponding angles]
Also, ACED
ACB=EDC=58 [Corresponding angles)
Since, AB=AC
ABC=ACB=58o [Isosceles triangle property]

Now, in ABC,
ABC+ACB+BAC=180o
58o+58o+a=180o
116o+a=180o
a=180o116o
a=64o

Hence, option B is correct.

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