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Mathematics 19 Online
OpenStudy (umarsback):

hellllpp trigonometry

OpenStudy (umarsback):

OpenStudy (anonymous):

Use the Laws of Sines \[ \frac{9}{\sin (A)}=\frac{13}{\sin (47 {}^{\circ})}\\ \sin (A)=\frac{9}{13} \sin (47 {}^{\circ})\approx .5\\ A \approx 30^{\circ} \]

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