Question

If A perpendicular to B
is a = 90°
Then Magnitude of resultant vector.is​

Answer 1

Answer:

as the angle is 90

the resultant vector of a and b is 0

Explanation:

Answer 2

Answer:

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

Explanation:

• Resultant of two vectors,

$r = \sqrt{ {a}^{2} + {b}^{2} + 2abcosx } \\ \: = \sqrt{ {a}^{2} + {b}^{2} + 2abcos90 } \\ \: = \sqrt{ {a}^{2} + {b}^{2} + 2ab \times 0 } \\ \: = \sqrt{ {a}^{2} + {b}^{2} }$