11 A helicopter flies from its base \( B \) to deliver supplies to two oil rigs at \( C \) and \( D \). \( C \) is \( 6 \mathrm{~km} \) due east of \( B \) and the distance from \( C \) to \( D \) is \( 8 \mathrm{~km} \). \( D \) is on a bearing of \( 120^{\circ} \) from \( B \). Find the bearing of \( D \) from \( C \).
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We can represent the locations of B, C, and D as points on a plane. B is the starting point, C is 6 km to the east, and D is 8 km away from C at a bearing of 120 degrees from B. Show more…
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