duhitzmay7039 duhitzmay7039

03-02-2018
Mathematics

contestada

Find a ·
b. |a| = 3, |b| = 14 , the angle between a and b is 45° $7.94 incorrect: your answer is incorrect.

Respuesta :

mathmate mathmate

03-02-2018

a · b = |a| |b| cos(theta)
=|a| * 14 * cos(45)

a · b |a| =3
=>
|a| * 14 * cos(45) * |a| =3
|a| ² =3/(14cos(45))
|a| = sqrt(3/(14cos(45)))
=0.63868 (approx.)

Answer Link

Otras preguntas

Which is true of the regions near earths equater

John deposited $80 in a savings account earning 5% interest, compounded annually. To the nearest whole dollar, how much interest will he earn in 3 years?

Antananarivo is the capital of which country?

What is a MAIN benefit of making a household budget? Question 41 options: to plan for saving and spending money to earn interest on money saved to increase a p

How to solve this showing all work ! Also explain why they aren’t polynomials if you can :)

A solid ball of radius rb has a uniform charge density ρ. Part A What is the magnitude of the electric field E(r) at a distance r>rb from the center of the b

which of these authors was an American dramatist whose novel The Death of a Salesman won the Pulitzer prize during the postmodernism period

The test grades of 10 different students were used to create the box plot above. Which of the following is the median of the set of grades? A. 62 B. 80 C.

Which of these is an accurate statement about the first Navigation Act, passed in 1651? A. It required all exports to be routed through England. B. It required

African American Life A Modern Portrait use approperiate colons