Question

The components of a vector along the
and y directions are (n + 2) and 1
respectively. If the coordinate system is
rotated by an angle 60° then the
components changes to n and 3. Find the
value of n.
A
5.5
B
C
3.5
D
1​

Answer 1

Answer:

answer = 1

Explanation:

=√(n+2)²+1 = √n²+3²

=√(n+2)²+1 = √n²+9 [squaring both sides]

=n²+4+4n+1 = n²+9

=n²-n²+4n = 9-4-1

=4n = 4

⇒SO

n=1