The square of the resultant of two forces 4N and 3N exceeds the square of the resultant of the two forces by 12 when they are mutually perpendicular. The angle between the vectors is

The square of the resultant of two forces 4N and 3N exceeds the square

1.	The square of the resultant of two forces 4N and 3N exceeds the square of the resultant of the two forces by 12 when they are mutually perpendicular. The angle between the vectors is
Answer» `30^(@)` `60^(@)` `90^(@)` `120^(@)` Answer :B