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Simplifying cos(x) + cos(2x) + cos(3x) + cos(4x) = 1 Multiply cos * x cosx + cos(2x) + cos(3x) + cos(4x) = 1 Remove parenthesis around (2x) cosx + cos * 2x + cos(3x) + cos(4x) = 1 Reorder the terms for easier multiplication: cosx + 2cos * x + cos(3x) + cos(4x) = 1 Multiply cos * x cosx + 2cosx + cos(3x) + cos(4x) = 1 Remove parenthesis around (3x) cosx + 2cosx + cos * 3x + cos(4x) = 1 Reorder the terms for easier multiplication: cosx + 2cosx + 3cos * x + cos(4x) = 1 Multiply cos * x cosx + 2cosx + 3cosx + cos(4x) = 1 Remove parenthesis around (4x) cosx + 2cosx + 3cosx + cos * 4x = 1 Reorder the terms for easier multiplication: cosx + 2cosx + 3cosx + 4cos * x = 1 Multiply cos * x cosx + 2cosx + 3cosx + 4cosx = 1 Combine like terms: cosx + 2cosx = 3cosx 3cosx + 3cosx + 4cosx = 1 Combine like terms: 3cosx + 3cosx = 6cosx 6cosx + 4cosx = 1 Combine like terms: 6cosx + 4cosx = 10cosx 10cosx = 1 Solving 10cosx = 1 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Divide each side by '10osx'. c = 0.1o-1s-1x-1 Simplifying c = 0.1o-1s-1x-1
| -3(x+4)=5x+8-(-4) | | 2e^3x+6=12 | | 3(x-8)=2[x-(4-x)] | | 7x^2-100x+645=0 | | 3y+11=8y-16 | | 5*tan(x)+3=8 | | 4y/4=12/4 | | (-x^2y^2)(3x^2y)^2(-5/6xy^3) | | 8x^2y^2-2xy= | | 2p(-7q)= | | 4x-7x=36 | | 2(x-10)-4= | | log4^8/11 | | 4sinx+10=12 | | 12x+2(72-4x)=216 | | 14s^2-19st-3t^2=0 | | 12x+2y=216 | | Graph-2x+4y-16=0 | | X^2y^2-2xy= | | 12(18-.25y)+37=216 | | -u/6=20 | | -53=-y/4 | | 12ab^2-3ab= | | 15ab-5ac= | | -10r^2+r+3=0 | | -5x-y=-7 | | 4x+8x^2= | | -x/x^2-169 | | 2(x+1)=x-15 | | 5*(11x)=4*(2x) | | -10m^2+8m=0 | | (8x+3)=(5x+42) |