cos(2x)=-0.3

Simple and best practice solution for cos(2x)=-0.3 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for cos(2x)=-0.3 equation: 


Simplifying
cos(2x) = -0.3

Remove parenthesis around (2x)
cos * 2x = -0.3

Reorder the terms for easier multiplication:
2cos * x = -0.3

Multiply cos * x
2cosx = -0.3

Solving
2cosx = -0.3

Solving for variable 'c'.

Move all terms containing c to the left, all other terms to the right.

Divide each side by '2osx'.
c = -0.15o-1s-1x-1

Simplifying
c = -0.15o-1s-1x-1

See similar equations:

| 5(4s+8)=280 | | 574/10000 | | (x-7)2=(x+4)2 | | 2x-43+12x=14x | | a/2-4=a/6 | | 2x+3+2x-12(2x-2)=a(2)x+b | | 9-1*2c= | | 2(2y+1)=3(y-4) | | Y=x^5-5x^3 | | 3(a-4)=45 | | 3(k+2)x^2+(k+5)x+k=0 | | 60-2w^2/2 | | 5c+7=(c-10) | | 0.5x-10=-2x | | 8X-4/3X^2=9 | | 315/6 | | 58/13/(-8) | | 360-125-114= | | 8X-4/3X^2 | | 4(8-5k)+2k=-40 | | (2x-4)*(x^2-4x+3)=0 | | a^2(b^2)^2/a^-3*b^0 | | 56.25=x^2-5x+50 | | 2v^2-6=136 | | 3x^3/5=48x^-1/5 | | =1877 | | 360-145-112= | | x^3+x^2-4x-12=0 | | 5k-18=8k | | 0.5/-2=0 | | 2x-2x=x | | k+46=3k |

Equations solver categories