http://www.aaa3.net/how-to-scale-diagrams/
Trig help for physics?
A woman starts traveling in a direction that is 45 degrees north of west for 6 mi. She then turns due west and travels for 4 miles. Finally she travels in a direction that is 30 degrees south of west for 3 mi. Draw a scale diagram of her path on graph paper.
a) Calculate how far north or south she ends up relative to her starting point.
b) Calculate how far east or west she ends up relative to her starting point.
c) Calculate how far is she overall from her starting point (straight line distance)
d) She points back toward her starting point. What direction is she point? (Be clear and exact)
When I do the drawing should their be a right angle and an obtuse angle. The obtuse angle having a degree of 150, that part has me stumped.
a) sin45(6)=4.24mile–North
sin30(3) = 1.5mile—South
ans: 4.24-1.5=2.47mile North
b) cos45(6)= 4.24–West
4mile–West
cos30(3)=2.6mile–West
ans: 4.24+4+2.6=10.84–West
c) a^2+b^2=c^2
2.47^2+10.84^2=c^2
ans: 11.12mile
d) tan^-1 (10.84 / 2.47)= 77.16 degrees E of S
i don’t really know how to explain this part but use the origional information they gave u which is 30 degrees.
If you draw a vertical line from the tail of the 3rd vector, it will form a 60 degrees angles.
02 Learn Electric Guitar “How To Read Scale Diagrams” – Rock Guitar Lesson
