Question

the direction of vector in space is? a.1-angle b. 2-angle c.3-angle d. 4 angle

Answer 1

Answer:

The angle α which the resultant R makes with A is given by

tanα=

A+Bcosθ

Bsinθ

or

cos(θ/2)

sin(θ/2)

=

A+Bcosθ

2Bsin(θ/2)cos(θ/2)

which gives A+Bcosθ=2Bcos

2

(

2

θ

)

or A+B[2cos

2

(

2

θ

)−1]=2Bcos

2

(

2

θ

)

A=B

Answer 2

Explanation:

The angle between two vectors u and v is the angle θ that satisfies: 0 <= θ <= 180° This definition works for both 2D space and 3D space. The angle is the smallest angle that one vector can be rotated until it aligns with the other. please mark me down as a brainliest answer