- #1
ShizukaSm
- 85
- 0
My problem is that I believe I have a wrong concept somewhere, and I can't find what I'm doing wrong exactly. For this problem let's suppose what I want to do is find the rectangular coordinates of BC.
I had two "possible solutions" I tried to achieve this, . First the correct one:
(I apologize by drawing quality)
By determining angles I can find that the angle between the vertical axis and BC is, therefore:
[itex](300\sin(50),300\cos(50))[/itex]
Now the wrong one:
By looking at the original figure alone, first I project BC into AB, then project BC into either X axis or Y axis.
Procedure:
- Projecting BC into AB -> [itex](300\sin(20),300\sin(20))[/itex]
- Projecting my new AB' into X and Y axis -> [itex]((300\sin(20))\sin(60),(300\sin(20))\cos(60))[/itex]
So, why is my second procedure wrong?