anonymous
  • anonymous
Malia and Michaela began swimming from the shore of Long Beach near Tofino BC. They swam at and angle of 43o to each other. When they stopped to rest, Michaela had gone 230m While Malia had gone 150m. How far apart were they to the nearest tenth of a metre?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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cwrw238
  • cwrw238
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cwrw238
  • cwrw238
AB is the distance you require you can find this using the Cosine Rule are you familiar with this?
anonymous
  • anonymous
yeah im familiar with this but this is an important question and i need to make sure i got the correct answer

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anonymous
  • anonymous
i got 157.9m but wasnt sure if it was correct
cwrw238
  • cwrw238
AB^2 = 230^2 + 150^2 - 2*230*150* cos43
cwrw238
  • cwrw238
yep - 157.91 m
anonymous
  • anonymous
ok i got that alright so then you find the cos of 43 x it by the answer of 2x230x150 to get 50463.4 and then subtract that from 75400 which is 230^2+150^2 to get 24936.6 and square root that to get 157.9
anonymous
  • anonymous
alright thanks for the help
cwrw238
  • cwrw238
yw

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