cos(2x)=1-2sen^2

Simple and best practice solution for cos(2x)=1-2sen^2 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)=1-2sen^2 equation: 


Simplifying
cos(2x) = 1 + -2sen2

Remove parenthesis around (2x)
cos * 2x = 1 + -2sen2

Reorder the terms for easier multiplication:
2cos * x = 1 + -2sen2

Multiply cos * x
2cosx = 1 + -2sen2

Solving
2cosx = 1 + -2en2s

Solving for variable 'c'.

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

Divide each side by '2osx'.
c = 0.5o-1s-1x-1 + -1en2o-1x-1

Simplifying
c = 0.5o-1s-1x-1 + -1en2o-1x-1

Reorder the terms:
c = -1en2o-1x-1 + 0.5o-1s-1x-1

See similar equations:

| r(x)=75X^2-5X^3/2 | | 9-(a-4)^2/14-2a | | senxcosx=1/2 | | 0.6x=1710 | | -60x+39=-21 | | 9x(3x+3)=0 | | X+18=53 | | 21x+6=27x-26 | | 2n-15=20 | | 5x-(3+2x)=-9 | | -2/5*n=-30 | | 7(2-x)=4-9x | | 6x^3-33x^2+36=0 | | 2s+5+3s=60 | | -7/4-3/2v=-7/3 | | x/6-5=1 | | 3(2x^3-11x^2+12x)=0 | | (3y+2)+(3y-2)=5 | | 1/7=-6/5w-1/2 | | 18-a=2a | | -10(s+4)=-108 | | 3k-5/4=3 | | 49/4x=7 | | 3x=525 | | (x+2)2+(y+2)2=4 | | 4x/4y | | 3(1+X)+2(X-5)+x+1=180 | | 10+2x=6x-38 | | F(x)=4X^2-5x-3 | | -6/5=1/2w-4/3 | | 6x+2=6x-38 | | Cosx=2.1-0.7x |

Equations solver categories