Question
A ship is 90 miles south and 20 miles east of port. The captain wants to travel directly to port. What bearing should be taken?
Answers
MathMate
"90 miles south and 20 miles east of port"
means the direction along which the ship must sail is:
x=-90, y=20
angle = atan(20,-90) = 180° - 12°-31'-44"
= 167°-28'-16" (in trigonometry notation).
To convert trigonometry notation to bearing, subtract angle from 90° or 450° if the angle exceeds 90°.
Bearing (clockwise from north)
= 450° - 167°-28'-46"
= 282°-31'-44"
means the direction along which the ship must sail is:
x=-90, y=20
angle = atan(20,-90) = 180° - 12°-31'-44"
= 167°-28'-16" (in trigonometry notation).
To convert trigonometry notation to bearing, subtract angle from 90° or 450° if the angle exceeds 90°.
Bearing (clockwise from north)
= 450° - 167°-28'-46"
= 282°-31'-44"
bu
uiuhi
kimberly
hi but
Mollet
A ship leaves port A and travels north for 47km and arrives at port B.It then travels east to port C which lies 35% of port A.How far is port C from port B? Draw a diagram to help you calculate.