Question

PLZ answer this PHY ques from VECTORS(.prod) ...​

Answer 1

Explanation:

π/2

90°

as A B C will form right angled triangle at The junction of A and B vector

so , it will come to be 90

as 12² + 5² = 13²

Answer 2

Answer:

( 3 )

Explanation:

Let the angle between them be O.

Given,

Vector sum of A and B is vector C.

Using the basic laws of vector addition:

= > vector A + vector B = vector C

= > √( 12^2 + 5^2 + 2.12.5.cosO ) = 13

= > 12^2 + 5^2 + 120cosO = 13^2

= > 144 + 25 + 120cosO = 169

= > 169 + 120cosO = 169

= > 120cosO = 0

= > cosO = 0

= > cosO = cos90°

= > O = 90°

= > O = π / 2

Therefore, angle between between the vector A and vector B is π / 2.