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

An obsession is __________________________? select one: a. a persistent idea, thought or impulse that is unwanted and inappropriate, causing marked distress. b.
what is the value of X
Tiger sharks are voracious eaters. They eat fish, seals, birds, and even old tires. Which of the following combines the two sentences with an appositive phrase
Phosphorus has an atomic mass of 31 and an atomic number of 15, so the number of neutrons must be _______________.
How would the Socialist Party feel about the New Deal program
How does the economy of Cuba differ from the economy of North Korea
Find all the values of x such that the given series would converge. ∑n=1∞(x−4)^n/4^n
how did hitler use appeasement to his advantage
the table below shows the number of the sub-atomic particles in an atom of nitrgen. what is the amu of a nitrogen atom?
All of the following are concerns about proprietary colleges except that: