Please help in Solving the Trigonometric Equation: cos^2x−sin^2x=cos3x

Alvin Parks 2022-11-20 Answered
Trigonometric equation.
Please help in Solving the Trigonometric Equation:
cos 2 x sin 2 x = cos 3 x
You can still ask an expert for help

Expert Community at Your Service

  • Live experts 24/7
  • Questions are typically answered in as fast as 30 minutes
  • Personalized clear answers
Learn more

Solve your problem for the price of one coffee

  • Available 24/7
  • Math expert for every subject
  • Pay only if we can solve it
Ask Question

Answers (2)

lavarcar2d2
Answered 2022-11-21 Author has 18 answers
cos 2 x sin 2 x = cos 3 x cos 2 x = cos 3 x 2 x = 2 π n ± 3 x x = 2 π n  or  x = 2 π n 5
where n Z
The second case includes the first case. 2 π n = 2 π ( 5 n ) 5
Did you like this example?
Subscribe for all access
Jared Lowe
Answered 2022-11-22 Author has 5 answers
cos 3 x = cos x cos x sin x sin x = cos 2 x ,
which is equivalent to
3 x ± 2 x = 2 k π
for some integer k.
Did you like this example?
Subscribe for all access

Expert Community at Your Service

  • Live experts 24/7
  • Questions are typically answered in as fast as 30 minutes
  • Personalized clear answers
Learn more

New questions