Question

Two vector of equal magnitude 5 unit have an angle 60 degree between them. Find the magnitude of the sum of the vector and the difference of the vector ​

Answer 1

Is answer is

$5 \sqrt{3}$

Answer 2

Answer:

heya mate....heres ur answer...

|a-b|= 2asin¶/2. ( where ¶ is the angle between two equal vectors)

=2*5 sin30°

=10*1/2

=5 units

now...

|a+b|=2a cos¶/2

= 2*5 cos 30°

=5root3

hope it helps....

thanks...