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Question Number 176936 by Ar Brandon last updated on 28/Sep/22

Answered by mr W last updated on 28/Sep/22

$$\frac{x}{\sin (15+30)}=\frac{4(\sqrt{3}-1)}{\sin 15}$$$$x=\frac{4(\sqrt{3}-1)\times 4}{(\sqrt{6}-\sqrt{2})}\times \frac{\sqrt{2}}{2}=8cm✓$$

Commented by Ar Brandon last updated on 28/Sep/22

$$\mathrm{Thanks}\mathrm{Sir}.\mathrm{Sine}\mathrm{rule}.\mathrm{I}\mathrm{remember}.$$

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