Physics, asked by goduguanusha502, 8 months ago

the magnitude of the resultsnt of two vectors of magnitude 3 units and 4 units in 5 units . what is the angle between them​

Answers

Answered by kaustumbh3136
1

Answer:Resultant(R) of two vectors is given as

R = sq root[ (R1)^2 + (R)^2 + 2*R1*R2*cos(a) ]

where R1 = magnitude of first vector

R2 = magnitude of second vector

a = angle between two vectors

Now, R1 = 3 units, R2 = 4 units, R = 5 units

substituting the values, we get

5 = sq root[ (3)^2 + (4)^2 + 2*3*4*cos(a) ]

or (5)^2 = [ 9 + 16 + 24cos(a) ]

25 = 25 + 24cos (a)

0 = 24cos(a)

cos(a) = 0

a = 90 degree

It means that the two vectors are perpendicular to each other.

Explanation:

Similar questions