Question

a vector 3i+4j rotates about its tail through an angle 37degrees in anti clock wise direction then new vector is

Answer 1

Answer:

When this vector rotates by 37° anti-clockwise then it will lie along y-axis.Jul 20, 2017

Answer 2

Answer:

5j

Explanation:

tan theta = y/x

So, tan theta = 4/3

so we can tell theta=53degree

now if 37 degree is added, it will lie along y axis,

new vector=sq.root (3^2 + 4^2)

                  =sq.root(25)

                  = 5j (cuz it lies on y axis...)

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