Question

if a vector + b vector is equal to c vector and a square + b square is equal to c square then find angle theta between them​

Answer 1

Step-by-step explanation:

let A is avector and B is b vector (just for convenience )

acc to que A+B=C

acc to ||gm law

a^2 +b^2+2abcosθ =c^2

acc to que a^2+b^2 is c^2

then from eq1

= c^2 +2abcosθ =c^2

= 2abcosθ = 0

= cos θ = 0

= θ = π/2