Bearings

I need help to understand Bearings.

Plz give me help with a link or written

I have a Level Up Homework Book Level 4-6

I need help with question 6

Thanks

Answers
could you post the question here?
chloe
06 April 2011
http://www.bbc.co.uk/schools/gcsebitesize/maths/shapes/coordinatesandbearingsrev3.shtml is quite helpful
chloe
06 April 2011
ive seen that
coolkid13
06 April 2011
a different 1
coolkid13
06 April 2011
ok well what exactly is it that you don't understand, maybe I can help
chloe
06 April 2011
ok plz do
coolkid13
06 April 2011
i need explaining
coolkid13
06 April 2011
on question 6 in level up maths 4-6
coolkid13
06 April 2011
can you post a link to that question or write it on here? What is it asking you to do?
chloe
06 April 2011
On a boat-handling course, kim was given three instruction
coolkid13
06 April 2011
ok so start off by drawing a North line
chloe
06 April 2011
Q1: Make a scale drawing (1cm=100m)
coolkid13
06 April 2011
Go 1500m on a bearing of 120degrees, then travel north for 00m
coolkid13
06 April 2011
Q2:In a straight line, how far is kim from her starting point
coolkid13
06 April 2011
then find 120 degrees with a protractor and draw a line to this point
chloe
06 April 2011
from where?
coolkid13
06 April 2011
from the middle of the line
coolkid13
06 April 2011
?
coolkid13
06 April 2011
no, from the bottom of your North line
chloe
06 April 2011
ok next?
coolkid13
06 April 2011
the length of the line needs to be the distance she's travelling in km, but converted into cm
chloe
06 April 2011
1500m
coolkid13
06 April 2011
ok so there are 100m in a km so it's going to be 1.5 km
chloe
06 April 2011
wqould that be 5cm?
coolkid13
06 April 2011
sorry your scale is 100m = 1cm right?
chloe
06 April 2011
so shall i draw a line of 1.5cm?
coolkid13
06 April 2011
yep
coolkid13
06 April 2011
10cm=1cm
coolkid13
06 April 2011
so it's going to be 15cm long
chloe
06 April 2011
1500/100 = 15
chloe
06 April 2011
is that it?
coolkid13
06 April 2011
then when you get to that end point, draw a straight line to the starting point
chloe
06 April 2011
exactly
chloe
06 April 2011
ok so from this point all you have to do is draw a line North of 5 cm
chloe
06 April 2011
will that be a straigt line for 5cm?
coolkid13
06 April 2011
then travel north for 500m
coolkid13
06 April 2011
so from the north line to the bottom
coolkid13
06 April 2011
from the line you've just drawn, to her start point
chloe
06 April 2011
then measure that length in cm and convert it back to km
chloe
06 April 2011
q2: In a staright line , how far is kim from her starting point?
coolkid13
06 April 2011
will that be 20cm cauz 15+5=20cm,
coolkid13
06 April 2011
1 min
coolkid13
06 April 2011
ill be back
coolkid13
06 April 2011
no it's not 15 + 5 because you would have travelled 15cm on a bearing of 120 degrees and then an extra 5cm due north
chloe
06 April 2011
so you're going to end up with a sort of triangle that you have to measure one side of
chloe
06 April 2011
have a look at this page to see what I mean http://www.mathsrevision.net/gcse/pages.php?page=12
chloe
06 April 2011
ok
coolkid13
06 April 2011
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