Asked by Ibrahim Deborah
A boy walks 60m on a bearing of 035 degree and then 300m due east. How far is he from his starting point?
Answers
Answered by
oobleck
the x distance is 60sin35° + 300
the y distance is 60cos35°
the final distance is found using the distance formula as usual
or, it can also come from the law of cosines:
z^2 = x^2+y^2 - 2xy cos145°
the y distance is 60cos35°
the final distance is found using the distance formula as usual
or, it can also come from the law of cosines:
z^2 = x^2+y^2 - 2xy cos145°
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