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Question Number 202039 by sonukgindia last updated on 19/Dec/23

Answered by mr W last updated on 19/Dec/23

Commented by mr W last updated on 19/Dec/23

$$\frac{AB}{AD}=\frac{AC}{AE}=\frac{\sqrt{3}}{2}$$$$\Rightarrow \mathrm{\Delta }ABC\sim \mathrm{\Delta }ADE$$$$\Rightarrow \alpha =\beta$$$$?=\alpha +60°+90°-\beta =150°✓$$

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