Respuesta :
Answer
x = 30° or x = (360 – 30) = 330° for value of (0≤x≥360)
Explanation
The first step is to find the anti-cosine of √3/2.
cos^(-1)〖√3/2〗=30°
So, x=30°
The values of x can be many so a limit has to be given. For one complete cycle, the values of x would be.
Since cosx is positive the value of x must have been in the first quadrant and the 4th quadrant.
So, x = 30° or x = (360 – 30) = 330°
x = 30° or x = (360 – 30) = 330° for value of (0≤x≥360)
Explanation
The first step is to find the anti-cosine of √3/2.
cos^(-1)〖√3/2〗=30°
So, x=30°
The values of x can be many so a limit has to be given. For one complete cycle, the values of x would be.
Since cosx is positive the value of x must have been in the first quadrant and the 4th quadrant.
So, x = 30° or x = (360 – 30) = 330°
Answer:
The general value of x is [tex]x=2n\pi\pm \frac{\pi}{6}[/tex], where n is any integer. The values of x between 0 to 2π are [tex]\frac{\pi}{6}\text{ and }\frac{11\pi}{6}[/tex].
Step-by-step explanation:
It is given that
[tex]\cos x=\frac{\sqrt{3}}{2}[/tex]
We know that
[tex]\cos \frac{\pi}{6}=\frac{\sqrt{3}}{2}[/tex]
So, the given equation can be written as
[tex]\cos x=\cos \frac{\pi}{6}[/tex]
[tex]x=2n\pi\pm \frac{\pi}{6}[/tex]
Where, n is any integer.
For n=0,
[tex]x=2(0)\pi\pm \frac{\pi}{6}=\pm \frac{\pi}{6}[/tex]
For n=1,
[tex]x=2(1)\pi\pm \frac{\pi}{6}=2\pi\pm \frac{\pi}{6}=\frac{11\pi}{6},\frac{13\pi}{6}[/tex]
Therefore the general value of x is [tex]x=2n\pi\pm \frac{\pi}{6}[/tex], where n is any integer. The values of x between 0 to 2π are [tex]\frac{\pi}{6}\text{ and }\frac{11\pi}{6}[/tex].