Hello, my physics professor glosses over a lot of problems. She

>>8923971
A=6.0m[cos(30°), sin(30°)]
B=4.0m[cos(90-30°), sin(90-30°)]

>>8923999
He's converting to rectangular form here. The next step you want to take is to add the pairs up, keep your numbers parallel.

>>8923971
>>>/sci/sqt

>>8924013
>>8923972

>>8923999
I don't get it, can you at least tell my the WHY's and HOW's on how to solve this?

>>8924025
So what is basically happening is you want to know what both vectors add up to each other. To do so, you have to change both your vectors to rectangular form. So you convert what is 6.0 @ 30 degrees ---> into (x,y). You do this with trig. Next step is to add up the coordinates. Add your X's add your Y's. Then the final step since your answers are in polar form is to convert the added value to polar form using trig with your new values. Your essentially finding the hypotenuse so use A^2+b^2=c^2. Done.

>>8923971
Do you understand trig? Imagine that the vector is the hypotenuse of a triangle. Solve for the lengths of the other two side's, add the sides together and then resolve for the new hypotenuse.

>>8924044
Yes, what I am having trouble understanding is WTF is north of east, and east of north. And why is the resulting answer north of east. Is it because thats where the direction would be heading if say both vectors were physically acting on each other because vector A has a larger magnitude? There are many questions I have.

>>8924051
Here's an easy way to think of what is meant by the cardinal directions:
NORTH of east. North of the EAST LINE.

So the vector is pointing right above the EAST LINE on the COORDINATE PLANE.

EAST of north. East of the NORTH LINE.

So the vector is pointing EAST of the NORTH LINE on the COORDINATE PLANE.

>>8924051
Draw a x,y coordinate on a piece of paper. The positive Y axis = north, positive X axis = east. 30deg North of east means they are saying there are positive 30 degrees between the x axis and your vector. If they said 30 degrees south of east then you would be -30 degrees between your vector and the x axis (or in the 4th quadrant)

Draw a compass ( north, south, east, west) and it will make sense.

>>8924062
Sex

>>8924051
>WTF is north of east, and east of north

Anti-clockwise from the x-axis, clockwise from the y-axis, respectively. Have you never seen a map?