ZJSG09112007
ZJSG09112007 ZJSG09112007
  • 25-03-2021
  • Mathematics
contestada

See image for question.

Please show workings and diagrams.​

See image for questionPlease show workings and diagrams class=

Respuesta :

mhanifa
mhanifa mhanifa
  • 26-03-2021

Answer:

  • a) 7 km
  • b) 298°

Step-by-step explanation:

See attached diagram (not to scale).

All given details reflected.

a) Find the measure of XZ using the law of cosines:

  • y = √(5² + 3² - 2*5*3*cos 135°) =  7 km (rounded)

b) Now using the law of sines find the measure of angle X:

  • 7 / sin 135° = 5 / sin X
  • sin X = 5 sin 135° / 7
  • m∠X = arcsin (5 sin 135° / 7 ) = 28° (rounded)

The bearing of Z from X is:

  • 270° + 28° = 298°
Ver imagen mhanifa
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