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11 September, 10:01

A beach has two floating docks. One is 650 meters east of

the lifeguard stand. The other is 60° southeast and 750

meters from the lifeguard stand,

Rounded to the nearest meter, what is the dista

the docks? Round to the nearest meter.

Law of cosines:q?=b2 + (? - 2bccos (A)

589 meters

705 meters

792 meters

861 meters

650 m

60°

750 m

+2
Answers (1)
  1. 11 September, 13:50
    0
    Answer: 705m

    Explanation:

    Using cosine rule:

    c² = a²+b²-2abcosC

    Substituting:

    c²=750²+650²-2 (750) (650) cos60

    c=√Ans

    c = 705.336799 ...

    =705m (nearest metre)
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