Functions of resistor

First fall Resistor mean passive two terminal electrical components that implements electrical resistance as a circuit an then is function are used to reduce current flow , adjust single level to divide voltage ,terminate transmission.

a. are

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west