|Vector b | = √ [(-2) 2 5 2] = √ 29
Vector a vector b = (3, 4). (-2, 5)=-6 20
=14
Entonces cos < a, b gt=(vector a . vector b)/(|vector a||vector b |)
=14/(5*√29)=14√29/145
(2)cos lt; a, b gt=(a.b)/(|a| |b|)
=-8/(√13*√5)
=-8√65/65
|Vector b | = √ [(-2) 2 5 2] = √ 29
Vector a vector b = (3, 4). (-2, 5)=-6 20
=14
Entonces cos < a, b gt=(vector a . vector b)/(|vector a||vector b |)
=14/(5*√29)=14√29/145
(2)cos lt; a, b gt=(a.b)/(|a| |b|)
=-8/(√13*√5)
=-8√65/65