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How are we to find the distance from B to C?

The bearing from A to C is N 64° W.

The bearing from A to B is S 82° W.

The bearing from B to C is N 26° E.

A plane flying at 350 mph takes 1.8 h to go from A to B.

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  • 1 year ago

    How are we to find the distance from B to C?

    The bearing from A to C is N 64° W.

    The bearing from A to B is S 82° W.

    The bearing from B to C is N 26° E.

    A plane flying at 350 mph takes 1.8 h to go from A to B.

    180° - 64° - 82° = 34°

    82° - 26° = 56° alt. int. ∠s

    AB = 350 × 1.8 = 630

    cos 56 = d/630

    OR

    sin 34 = d/630

    d = 350 miles

    The distance from A to B equals 1.8 × 350 miles.

    ∠A = 34°, ∠B = 56°, ∠C = 90°

    The distance from B to C is 350 miles.

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