The resultant of and makes an angle with and with , then :-
As we discussed in concept
Parallelogram law of vector Addition -
If two vector are represented by both magnitude and direction by two adjacent side of parallelogram taken from same point then their resultant is also represented by both magnitude and direction taken from same point but by diagonal of parallelogram.
- wherein
Represents law of parallelogram vector Addition
Option 1)
Option is incorrect
Option 2)
Option is incorrect
Option 3)
Option is correct
Option 4)
Option is incorrect