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Trigonometry, SMB-057

Find \(\alpha\), to the nearest degree, such that

\(\dfrac{\sin \alpha}{8} = \dfrac{\sin 60^{\circ}}{11} \)   (2 marks)

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\(\alpha=39^{\circ}\)

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\(\dfrac{\sin \alpha}{8}\) \(= \dfrac{\sin 60^{\circ}}{11} \)  
\(\sin \alpha\) \(= \dfrac{8 \times \sin 60^{\circ}}{11}\)  
\(\alpha\) \(=\sin^{-1} (0.6298) \)  
  \(=39^{\circ}\ \text{(nearest degree)} \)  

Filed Under: Non Right-Angled Trig Tagged With: num-title-ct-pathc, smc-4553-20-Sine Rule

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