- #1
lovemake1
- 149
- 1
Hello, I am slightly confused with component vectors.
if I am trying to add two vectors, which are 33m/s [W33E] and 53m/s [N54W] i have to
break them down into x and y component.
i can get them by using cos and sin.
but there are some occasions where I am not sure if the degree I am using is correct.
for example for 33m/s the xcomponent would be 33cos33 and ycompoent would be 33sin33.
when do we ever use 33cos-33 ? beacuse i know there are some occasions where negative angle is neccesary or even (180-33) obtuse angle to find the component.
please could anyone clarify this for me thanks,
if I am trying to add two vectors, which are 33m/s [W33E] and 53m/s [N54W] i have to
break them down into x and y component.
i can get them by using cos and sin.
but there are some occasions where I am not sure if the degree I am using is correct.
for example for 33m/s the xcomponent would be 33cos33 and ycompoent would be 33sin33.
when do we ever use 33cos-33 ? beacuse i know there are some occasions where negative angle is neccesary or even (180-33) obtuse angle to find the component.
please could anyone clarify this for me thanks,