matt233072 matt233072

13-11-2019
Mathematics

contestada

The value 5pi/24 is a solution for the equation 4 cos^2 (4x)-3=0. True or false

Respuesta :

13-11-2019

Let's check.

x = 5π/24

4x = 5π/6

cos 4x = cos(5π/6) = cos 150° = -√3/2

cos² 4x = (-√3/2)^2 = 3/4

4 cos² 4x -3 = 4 (3/4) - 3 = 0

Answer: TRUE

Answer Link

Otras preguntas

What is Machiavelli’s view of human nature

Though no longer a series of colonies, the United States retains close ties to Britain as __________. a. a commonwealth b. a dependency c. a dominion d. part of

What has been the most significant effect of artistic development in New Mexico since world war 2? give two reasons to justify your answer.

how can ordinary people be special?

The ground temperature at Brigham Airport is 12 degrees Celsius. The temperature decreases by 6.8 degrees Celsius for every increase of 1 kilometer above the gr

kedar earns a monthly salary of $2,200 plus a 3.75% commission on the amount of his sales at a mens clothing store. what would he earn this month if he sold $4,

What is Machiavelli’s view of human nature

Which of the following can be used to cut DNA so it can be studied? A. restriction enzymes B. gel electrophoresis C. karyotypes D. haplotypes

The signing of the Treaty of Versailles ended World War I. True or False?

The World Health Organization, an agency of _____, is responsible for making sure people attain the highest level of health. a.the League of Nations b.the Unite