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hEYA

Hey please look at the attachment thank you. x
Bearings questions.PNG33.9KB
Reply 1
Avatar for ombtom
ombtom
17
Original post by User23
Hey please look at the attachment thank you. x


Angle between north and LA = 70 degrees.

Angle between LA and LB = 210 - 70 = 140 degrees.

You now know an angle with two sides; use the cosine rule to find AB. :smile:
Reply 2
Avatar for kkboyk
kkboyk
21
Original post by User23
Hey please look at the attachment thank you. x


Well you're given measurement of two sides, and also two angles, so use cosine rule :tongue:
Reply 3
Avatar for User23
User23
OP
3
Original post by ombtom
Angle between north and LA = 70 degrees.

Angle between LA and LB = 210 - 70 = 140 degrees.

You now know an angle with two sides; use the cosine rule to find AB. :smile:


wait i dont know how u got the angle between LA and LB?
Reply 4
Avatar for User23
User23
OP
3
Original post by ombtom
Angle between north and LA = 70 degrees.

Angle between LA and LB = 210 - 70 = 140 degrees.

You now know an angle with two sides; use the cosine rule to find AB. :smile:


Is this it?
nEW ONE.PNG30.1KB
Reply 5
Avatar for ombtom
ombtom
17
Original post by User23
Is this it?


That's exactly right. If you add 70 and 140, you get 210. :smile:
Reply 6
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User23
OP
3
Original post by ombtom
That's exactly right. If you add 70 and 140, you get 210. :smile:


ok cool thanks x

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