A =20 B =30 THE angle between them is 60 then the resultent is
Answers
Answered by
0
According to the cosine rule for vector addition,
|A⃗ +B⃗ |2=|A⃗ |2+|B⃗ |2+2|A⃗ ||B⃗ |cosθ|A→+B→|2=|A→|2+|B→|2+2|A→||B→|cosθ where θθ is the angle between A⃗ A→ and B⃗ B→
So,
252=242+72+2∗24∗7∗cosθ252=242+72+2∗24∗7∗cosθ
That gives cosθ=0cosθ=0 which means the angle is π2π2 radians.
|A⃗ +B⃗ |2=|A⃗ |2+|B⃗ |2+2|A⃗ ||B⃗ |cosθ|A→+B→|2=|A→|2+|B→|2+2|A→||B→|cosθ where θθ is the angle between A⃗ A→ and B⃗ B→
So,
252=242+72+2∗24∗7∗cosθ252=242+72+2∗24∗7∗cosθ
That gives cosθ=0cosθ=0 which means the angle is π2π2 radians.
Similar questions