Question

Given v = 4i - j and w = 2i + 5j, find the angle between v and w

Answer 1

Angle between v and w is

Angle A = Angle v - Angle w

then

Angle v= Arctan (-1/4) = -14 °

Angle w= Arctan (5/2) = 68.2 °

Therefore, angle between v and w is

. = -82.2 °

Then answer is

Angle A = -82.2°