Final answer:
The angle of the resultant addition vector can be found if only the angles of two vectors are known.
Step-by-step explanation:
The statement True or False-If only the angles of two vectors are known, we can find the angle of their resultant addition vector is true.
To find the angle of the resultant vector, we can use the law of cosines. By knowing the angles between the vectors and the magnitudes of the vectors, we can calculate the angle of the resultant vector.
For example, if we have two vectors, A and B, and we know the angles between them, we can use the formula: cos(theta) = (A^2 + B^2 - C^2) / (2AB), where theta is the angle between the resultant vector and vector A, and C is the magnitude of the resultant vector.