For the vectors a1=(5,6,-7), a2=(1,-3,-5) , and a3=(0, -4, 2) construct the vector
For the vectors a1=(5,6,-7), a2=(1,-3,-5) , and a3=(0, -4, 2)
construct the vector m=a1+4a3-a2, find its components, the magnitude, the unit vector and directional cosine of m โ.