two vectors equal have resultant equal to either find the angle between them
Asked by choudharypriya65490 | 8th Sep, 2020, 12:26: AM
Expert Answer:
Let 
be the angle between the two vectors A and B such that, |A| = |B|.
Therefore,
R2 = A2 + B2 + 2AB cos
=> A2 = A2 + A2 + 2(A)(A) cos [since, |A| = |B| = |R|]
=> A2 = 2A2 + 2A2 cos
=> cos = -1/2
=> = 120°
Let be the angle between the two vectors A and B such that, |A| = |B|.
Therefore,
R2 = A2 + B2 + 2AB cos
=> A2 = A2 + A2 + 2(A)(A) cos [since, |A| = |B| = |R|]
=> A2 = 2A2 + 2A2 cos
=> cos = -1/2
=> = 120°
Answered by Shiwani Sawant | 8th Sep, 2020, 10:52: AM
Concept Videos
- how to find resolution of vectors
- let angle beyween two nonzero vectors A bar and Bbar 120° and resultant be C bar
- define free fall
- A force of 2i+3j+2kN acts on a body for 4s and produces a displacement of 3i+4j+5k m. calcuate power.
- If IA×B| = A•B, what is the angle between A and B?
- find angle between P vector and Q vector if resultant is given by R^2=P^2+Q^2.
- Resolve a force of 10 N into two components, if it acts at an angle of 30o with the horizontal.
- Difference between opposite and antiparallel vectors?
- List of vector formulas
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Sign Up
Verify mobile number
Enter the OTP sent to your number
Change