A walker travels from $A$ to $B$ on a bearing of $035^\circ$, then from $B$ to $C$ on a be

Question

A walker travels from $A$ to $B$ on a bearing of $035^\circ$, then from $B$ to $C$ on a bearing of $120^\circ$. Find the bearing of $A$ from $B$.[1] Find the interior angle $ABC$. Explain why subtracting $35^\circ$ from $120^\circ$ does not give this angle.[2]

Accepted Answer

(a) $215^\circ$ (b) $95^\circ$; use the reverse direction $BA$.

Angles at a change of direction

Angles at a change of direction

Solution:

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