NonaTrudillo NonaTrudillo

05-08-2015
Mathematics

contestada

1+cos(8x)=
a. 4cos(2x)
b. 2sin^2(4x) C.4sin(2x) D.2cos^(4x)

Respuesta :

05-08-2015

[tex]cos^2(x)+sin^2(x)=1 \\ 1=cos^2(4x)+sin^2(4x) \\ \\ cos(2x)=cos^2(x)-sin^2(x) \\ cos(8x)=cos(4 \times 2x)=cos^2(4x)-sin^2(4x) \\ \\ \\ 1+cos(8x)=cos^2(4x)+sin^2(4x) +cos^2(4x)-sin^2(4x) \\ cos^2(4x)+cos^2(4x)=2cos^2(4x)[/tex]

D.2cos^(4x)

Answer Link

Katarina4 Katarina4

19-02-2020

Answer:

2Cos^2(4x)

Step-by-step explanation:

Apex

Answer Link

Otras preguntas

What profession is responsible for providing short term care for people being transorted to the hospital?

express the area of a square with sides of length 5ab as a monomial

nine hundred twenty-three thousand, nine hundred rwenty-three in expanded form?

Which is an estimate of the square root of 14 to the nearest hundredth?

The president’s closest advisors within the executive office of the president work in _____.

The ages of Sylvana’s three daughters are consecutive even integers. The sum of their ages is 60. Write an equation that represents this situation. Then, find t

The Roaring Twenties were characterized by A internment camps, the rationing of goods, and the first use of an atomic bomb. B bank failures, the New Deal, and

Both the experimental group and the control group are exposed to the same __________. A. type of treatment B. independent variable C. confounding variables D. e

an andjective clause ansewers the questions which__,what__,how__and how___

Rules of behavior known as the Ten Commandments were derived from what tradition

Q&A Education