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Question Number 187100 by Tons last updated on 13/Feb/23

Answered by a.lgnaoui last updated on 14/Feb/23

$$△APBAB\sin X=AC\cos Y$$$$$$$$BC=2AB\cos Y\Rightarrow \{\begin{array}{l}Y=\frac{\pi }{2}-X\\ AB=AC\end{array}$$$$\sin X=\cos Y$$$$△ABCDSqart\left(Care\right)$$$$2Y=\frac{\pi }{2}\Rightarrow Y=\frac{\pi }{4};X=\frac{\pi }{4}$$$$$$

Commented by a.lgnaoui last updated on 14/Feb/23

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