they say u=<-55sin45,-55cos45> i understand
u=<-38.89,-38.89> i understand
v=<55sin60,-55cos60> i understand
v=<47.63,-27.50> i understand
u+v=<8.74,-66.39> i understand
w=-(u+v) i understand
w=<-8.74,66.39> i understand
||w||=67 pounds (i understand)
then inverse tan (66.39/-8.74)=...
or am i missing something? is this actually 3D? is north coming out of the page? and u and v are on the page? i wouldn't even know how to think about that?
the only way i have been able to see it would be for it to the resultant vector of u and v... which would be 7.5 degrees east of south... and 277.5 degrees if starting at due east and measuring counter clockwise around to the resultant vector... just like you would normally measure degrees...
Regardless of being east of south or south of east... i don't see how it can be S 7.5 E... Which was my question... however... it is east of south... and therefore i don't see how it can be 277.5 degrees... because the answer i come up with is 82.5 degrees north of east or of course that would...
aww... a little research and i found the answer...
In navigation, a vehicle's course or heading is the angle that the intended path of the vehicle makes with a fixed reference object (typically true north). Typically course is measured in degrees from 0° clockwise to 360°
Wind direction is...
Homework Statement
in the given figure, vectors u and v each have a magnitude of 55 pounds. Find the magnitude and direction of the force w needed to counterbalance u and v? So the "figure" is pretty simple... it shows a line labled North and south and vector u is pointing 45 degrees in the...
Homework Statement
An airplane has an airspeed of 145 km/h. it is to make a flight in a direction of 72 degees while there is a 32-km/h wind from 342 degrees. what will the airplane's actual heading be?
Homework Equations
trig functions
The Attempt at a Solution
this is a calc3...