What is the general solution for cos^2(x)-4cos(x)=0 ?

The general solution for cos^2(x)-4cos(x)=0 is x= pi/2+2pin,x=(3pi)/2+2pin

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

cos^2(x)-4cos(x)=0

cos^{2} (x) - 4 cos (x) = 0

x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn

Solution steps

cos^{2} (x) - 4 cos (x) = 0

Solve by substitution

cos (x) = 4, cos (x) = 0

cos (x) = 4 :

No Solution

cos (x) = 0 : x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn

Combine all the solutions

x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn

x, sin (x) + cot (x) cos (x) = \frac{1}{f}

\frac{1}{sin ( x )} = 2

tan (x) csc (x) - 2 tan (x) = 0

1 - 2 sin (θ) = 0

cos (2 θ) + 3 cos (θ) = 4

What is the general solution for cos^2(x)-4cos(x)=0 ?
The general solution for cos^2(x)-4cos(x)=0 is x= pi/2+2pin,x=(3pi)/2+2pin