briscosarg19
briscosarg19 briscosarg19
  • 12-02-2018
  • Mathematics
contestada

Solve the equation for all values of x. Not really sure how to do this?

cos x = 3*cos x - 2

Respuesta :

jdoe0001 jdoe0001
  • 12-02-2018
[tex]\bf cos(x)=3cos(x)-2\implies 0=3cos(x)-2-cos(x) \\\\\\ 0=2cos(x)-2\implies 2=2cos(x)\implies \cfrac{2}{2}=cos(x)\implies 1=cos(x) \\\\\\ cos^{-1}(1)=\measuredangle x\implies \measuredangle x= \begin{cases} 0\\ 2\pi \end{cases}[/tex]
Answer Link

Otras preguntas

-25+4h=50.25 solve for h
help me please asap, thank you!
Which slide elements must claire use to enhance her presentation?To provide a bold effect on the key messages, clair must enhance the ____ element on the slide.
Solve 2x^2 + 5x -3 ≤ 0 A. {-1 ≤ x ≤ 3/2} B. { -1/2 ≤ x ≤ 3} C. { -3 ≤ x ≤ 1/2} Please show work !
The Indian subcontinent is an accreted crustal block known as _____.
Write the slope intercept form of an equation that passes through the point and is perpendicular to the graph of the equation (2,-4), 2x-3 y=9
Which is the BEST explanation for why the Northern economy was based on industry during the antebellum period? A) The Tariff of 1832 prohibited the growth of fa
Someone help me asap? (photo)
Use quadratic formula to find both solutions to the quadratic equation given below . 3x^2-5x-1=0
I have absolutely no idea how to do this and chemistry is my worst subject please help