candylandkhung candylandkhung
  • 15-08-2016
  • Mathematics
contestada

solve the following equation: cos^2(2x)-sin^2(2x)=0

Respuesta :

caylus
caylus caylus
  • 15-08-2016
Hello,

since [tex]cos^2{a}-sin^2{a}=cos(2a)[/tex]

cos^2(2x)-sin^2(2x)=0
==>cos(4x)=0
==>4x=π/2+kπ
==>[tex]x= \dfrac{\pi}{8} + \dfrac{k\pi}{4} [/tex]

Answer Link

Otras preguntas

How to answer the following questions in spanish?? Quien batea? Con que batea?
The major blood vessels include a. arteries. b. veins. c. capillaries. d. all of the above.
the water pipe has a radius of 5 cm and a height of 7 cm. what volume of water does it take to fill the pipe?
which is bigger 20 kilograms or 2,000 grams
The net force determines how and if an object will BLANK thank youuuu
Explain why sedimentary rocks are found as a veneer covering large areas of the continental igneous rocks
If a rock is sitting in the dirt, the normal force from the ground and BLANK are acting on it plz help
help calculate 6x+14=32
a rectangle has an area of 30 square meter and a perimeter of 34 meters. what are the dimensions of rectangle?
A force of 200 N is required to keep an object sliding at a constant speed of 2 m/s across a rough floor. How much power is being expended to maintain this moti