Given that Y is 20cm on a bearing of 300\(^o\) from x, how far south…

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Mathematics WAEC 2018

Given that Y is 20cm on a bearing of 300\(^o\) from x, how far south of y is x?

  • 10cm checkmark
  • 15cm
  • 25cm
  • 30cm

The correct answer is: A

Explanation

In \(\bigtriangleup\)YSC, sin 30\(^o\) = \(\frac{YS}{20}\)

|YS| = 20 sin 30\(^o\)

= 20 x 0.5

10m

 

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