DylanM7790 DylanM7790

09-01-2018
Mathematics

contestada

Find a ·
b. |a| = 8, |b| = 7, the angle between a and b is 2π/3

Respuesta :

carlosego carlosego

21-01-2018

By definition we have that the scalar product of two vectors is given by:
a.b = | a |. | b | .cos (angle)
Substituting the values
a.b = (8) * (7) * (cos (2π / 3)) = - 28

Answer Link

Otras preguntas

A circle has radius 50 cm. Which of these is closest to its area? 157 cm^2 314 cm^2 0 7,854 cm^2 0 15,708 cm^2

Solve the system of linear equations, using the Gauss-Jordan elimination method. (If there is no solution, enter NO SOLUTION. If there are infinitely many solut

Why do high nutrient levels reduce water quality for fish and other organisms?

What did Shi Huangdi do to ensure that no one knew the location of his tomb?

Determine the number of containers required to support a lean process which uses 200 parts per hour. The time for a container to complete a cycle (move, wait, e

Read the text about Wilbur and Orville Wright. Wilbur and Orville Wright came from a family who valued education. Their father was a minister and had plenty of

The question is above.

!!!!! In The True Confessions Of Charlotte Doyle !!!!!! Imagine that you could give one character in the novel advice to help him or her in the story. Whom woul

how does information literacy skills impact your academic or professional career

Each of the thermometers shows a different temperature scale. The thermometer on top measures temperature in Celsius degrees. The thermometer on the bottom meas