Question

a person walks 25 degrees south of west for 2 km. how far would he walk due to south?
due to west?

Answer 1

\[\color{green}{\vec{d}_y = \vec{d} \cdot \cos 65^\circ\\ \vec{d}_x = \vec{d} \cdot \sin 65^\circ}\]
The directions will be as shown in the diagram. Use 2 km for vector d when you solve the equations shown above.

Answer 2

wont that b -d

Answer 3

@ghuczek

Answer 4

-d.sin65

Answer 5

Yes, if you assign negative values for down and left. Exactly.

Answer 6

can u help me out in 1 more

Answer 7

vector B has the magnitude of 20 cm and is directed 25 anti clockwise. from - xaxis
express in unit vctr notation

Answer 8

\[\color{green}{\vec{B}_x = - \vec{B} \cdot \cos 25^\circ\\ \vec{B}_y =- \vec{B} \cdot \sin 25^\circ}\]