Can somebody help me get started on this problem?

  • Thread starter cbs81
  • Start date
  • #1
3
0
vector b = (89.9)x + (-43.8)y

what is the direction of b in radians counter clockwise from the positive x - axis.

i already solved for the unknown side, but i don't understand how i solve this with the information given? any help would greatly appreciated.
 

Answers and Replies

  • #2
3
0
sorry mods, please move to coursework help.
 
  • #3
1,341
3
Setup a trig ratio to find the angle in radians...
 
  • #4
3
0
so, do i do:

360 * tan ^-1 (43.8/89.9)

i'm not sure what do about counter clockwise thanks.
 
Last edited:
  • #5
mezarashi
Homework Helper
650
0
The counter-clockwise means that if the angle opens below the positive x-axis, then it is considered positive.
 

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