Question

twk forces of magnitude A and B are acting at right angle to each other.what will be the magnitude of their resultant?​

Answer 1

Answer:

The forces are perpendicular since they have an angle 90° between them.

if we need to find resultant, we can simply use Pythogorean Theorem.

Hence the resultant magnitude is,

$\sqrt{ {a}^{2} + {b}^{2} }$

for angle other than 90 use cosine rule.