cos(30)2-cos(60)2=-8

Simple and best practice solution for cos(30)2-cos(60)2=-8 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(30)2-cos(60)2=-8 equation: 


Simplifying
cos(30) * 2 + -1cos(60) * 2 = -8

Reorder the terms for easier multiplication:
30 * 2cos + -1cos(60) * 2 = -8

Multiply 30 * 2
60cos + -1cos(60) * 2 = -8

Reorder the terms for easier multiplication:
60cos + -1 * 60 * 2cos = -8

Multiply -1 * 60
60cos + -60 * 2cos = -8

Multiply -60 * 2
60cos + -120cos = -8

Combine like terms: 60cos + -120cos = -60cos
-60cos = -8

Solving
-60cos = -8

Solving for variable 'c'.

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

Divide each side by '-60os'.
c = 0.1333333333o-1s-1

Simplifying
c = 0.1333333333o-1s-1

See similar equations:

| -2x-8=2(x+4) | | 3x-10+7x+3x-5= | | 4x^36=0 | | 3w^4+24w^3+48w^2=0 | | 16x^2-24x=7 | | 8+5x=38 | | 48n=n-1 | | -2x^5(8x^5+2)= | | 6a=4 | | x^36=0 | | 10x+5=-5x-10 | | 42+2x+10+4x+8=180 | | z=17+2(x+6) | | 4x-2=6+2x | | 42+2x+10+4x+8=8 | | M^2+24m+63=0 | | 4a(4+6b)= | | 12(x+6)=11x-5 | | 3x^2+6x=y | | (2s^7-6s^3+2)-(3s^7+2)= | | x*x=480 | | 48n=n | | 8z+2z-9=-49 | | (3x^6)(6x^4)= | | 3(1+104x)=8 | | 36=1(-12)-5(-12) | | (r^3+2r+1)+(2r^3-4)= | | g(x)=log(x+5) | | 2x+3=7x+43 | | 4x+2+x=-4+3x+2 | | (6xy^6z^5)(2xz)= | | 2x+-6y=18 |

Equations solver categories