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Quantitative Aptitude

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Find the valu...

Question

Find the value of $∠$ BAC in the given figure if AB = AC.

A

4x

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B

x

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C

5x

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D

7x

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E

2x

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Solution

The correct option is E
2x

$Δ$ ABO $≅ Δ$ ACO,

$∠$ ABO = $∠$ ACO = x

$∠$ ABO = $∠$ BAO = x $Δ$ ABO is isosceles

$∠$ ACO = $∠$ CAO = x $Δ$ ACO is isosceles

So, $∠$ BAC = 2x

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