Question

The resultant of two vectors is perpendicular to one
of them and has the magnitude 4 m. If the sum of
the magnitude of two vectors is 8 m then their
respective magnitude are
(1) 4 m, 4 m
(2) 2 m, 6 m
(3) 3 m,
5m . (4) 1 m, 7 m
​

Answer 1

Explanation:

R = 4 cm

let R perpendicular to A

using cosine sticks

A = R cos theta

= 4 × 1

= 4

so (1) is correct

Answer 2

Answer:

option 1 is correct....1 4m,4m