Teaching Haryana (HPSC) Assistant Professor Mock Test 2025 Physics Vectors Addition and subtraction of vectors
If two vectors \(\rm \vec A \ and \ \vec B\) having equal magnitude R are inclined at an angle θ, then
1
\(\rm |\vec A-\vec B|=\sqrt2 R \sin \left(\frac{\theta }{2}\right)\)
2
\(\rm |\vec A+\vec B|=2 R \sin \left(\frac{\theta }{2}\right)\)
3
\(\rm |\vec A+\vec B|=2 R \cos \left(\frac{\theta }{2}\right)\)
4
\(\rm |\vec A-\vec B|=2 R \cos \left(\frac{\theta }{2}\right)\)
5
Question Not Attempted