Write the Trig component form of a vector with magnitude 9 and an angle 45 degrees below the positive x-axis.

Question

Remember to make direction angle between 0 and 360 degrees). Do not write the degree part out. Ex: 4<cos60, sin 60> 

Trig Vector from = ____<cos____, sin_____

Answer 1

We need to figure out the positive value of an angle which is 45 degrees below the positive x-axis. This would be -45 degrees so we add 360 to (-45) which equals 315 degrees.

So our answer is 9<cos315, sin315