sen^2x+2cosx-1=0

Simple and best practice solution for sen^2x+2cosx-1=0 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 sen^2x+2cosx-1=0 equation:


Simplifying
sen2x + 2cosx + -1 = 0

Reorder the terms:
-1 + 2cosx + en2sx = 0

Solving
-1 + 2cosx + en2sx = 0

Solving for variable 'c'.

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

Add '1' to each side of the equation.
-1 + 2cosx + 1 + en2sx = 0 + 1

Reorder the terms:
-1 + 1 + 2cosx + en2sx = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 2cosx + en2sx = 0 + 1
2cosx + en2sx = 0 + 1

Combine like terms: 0 + 1 = 1
2cosx + en2sx = 1

Add '-1en2sx' to each side of the equation.
2cosx + en2sx + -1en2sx = 1 + -1en2sx

Combine like terms: en2sx + -1en2sx = 0
2cosx + 0 = 1 + -1en2sx
2cosx = 1 + -1en2sx

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

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

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

See similar equations:

| 0=-16t^2+83t+12389 | | z^2-4iz-2i-4=0 | | (-1.8)-a=5.4 | | 7x-1=-44 | | 0=-16t^2+80t+12389 | | -28+2+y=-3+11 | | (x-5)(9x+4)=1 | | f(x)=x^3+27x^2-9x-10 | | 4x=2x+46 | | 5+6-n=1 | | 7.95h+110.25=150 | | 4.8x+39.9=9.3-5.4x | | 10-2/3n=53 | | 50=$10000/X | | x+(3x-10)=150 | | 4747=373 | | Y=1/2(4-2x) | | (11x-7)(2x+5)=0 | | 20+8h=60 | | 10x+8=180 | | (3x/(x^2-4))-1/x^2 | | 2x+2(x-4)=3x | | 25a^2-15=2a | | 9r+4=29r+9 | | 14+2r=20 | | h=12+15t+-16t^2 | | 7x-7-4x=4x-4 | | (a^2+b^2)(a+b)=0 | | x+(4x-5)=125 | | (8x+6)(-4x-6)=0 | | 30/7.5 | | h=12+15t+16t^2 |

Equations solver categories