Vectors a and b are such that the magnitude of a = magnitude of b and the angle between a and b is 40 degress. The angle between vectors a and a + b is?
Vectors a and b are such that the magnitude of a = magnitude of b and the angle between a and b is 40 degress. The angle between vectors a and a + b is?
Thanks for the help!
Hello, classicstrings,
do the addition of vectors geometrically. Because $\displaystyle \|{\vec{a}}=\|{\vec{b}}$ you'll get a rhombus. Thus the vector $\displaystyle \vec{a}+\vec{b}$ bisect the angle. So the value of the angle you are looking for is 20°.