Physics, asked by fizzahsardar, 7 months ago

Two vectors A and B are making angle theta with each other. The scalar projection of vector B on Vector A is ?? ​

Answers

Answered by anujgodwe956
2

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

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