Prove the identity cos x + cos y = 2cos(x+y/2) cos(x-y/2).
a. show that x+y/2+x-y/2=x
b....
Mathematics, 17.12.2019 05:31 xaxtusgod
Prove the identity cos x + cos y = 2cos(x+y/2) cos(x-y/2).
a. show that x+y/2+x-y/2=x
b. find a similar expression using x+y/2 and x-y/2 that equals y.
c. use parts (a) and (b) to prove the identity.
Answers: 1
Mathematics, 21.06.2019 13:00
Create a real-life situation and create a system and show how it might be modeled algebraically with a system of equations (or inequalities) show all work include a few sentences explaining the situation, your variables of choice and what each represents, and how you would set it up and solve it algebraically. !
Answers: 1
Mathematics, 21.06.2019 16:00
Afactory adds 3 red drops and 2 blue drops of coloring to white paint to make each pint of purple paint. the factory will make 50 gallons of the purple paint.how many drops of red and blue coloring will the factory need in the 50 gallon batch of purple paint.
Answers: 1
Mathematics, 21.06.2019 20:00
Find the slope of the line passing through a pair of points
Answers: 2
Mathematics, 21.06.2019 20:30
1. evaluate 8x(2)y9(-2) for x=-1 and y=2 2. simplify the equation. -() 3. simplify the expression. [tex]\frac{5}{x(-2) y9(5)}[/tex]
Answers: 1
Mathematics, 19.05.2021 22:10
Mathematics, 19.05.2021 22:10
Chemistry, 19.05.2021 22:10
Mathematics, 19.05.2021 22:10
Mathematics, 19.05.2021 22:10
Mathematics, 19.05.2021 22:10
Mathematics, 19.05.2021 22:10
History, 19.05.2021 22:10