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Determine the angle ACB.

Mathematics

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2 steps

Here's how to solve the problem:

Part i) Calculate the distance between A and B

  1. Determine the angle ∠ACB\angle ACB.

    The bearing of B from C is 254∘254^\circ.
    The bearing of A from C is 344∘344^\circ.
    The angle ∠ACB\angle ACB is the difference between these two bearings:

    ∠ACB=344∘−254∘=90∘\angle ACB = 344^\circ - 254^\circ = 90^\circ
  2. Use the Pythagorean Theorem to find the distance AB.

    Since ∠ACB=90∘\angle ACB = 90^\circ, △ABC\triangle ABC is a right-angled triangle with the right angle at C.
    Given AC=78AC = 78 m and $

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