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Simplifying cos(2x) + cos(5x) + cos(x) = 0 Remove parenthesis around (2x) cos * 2x + cos(5x) + cos(x) = 0 Reorder the terms for easier multiplication: 2cos * x + cos(5x) + cos(x) = 0 Multiply cos * x 2cosx + cos(5x) + cos(x) = 0 Remove parenthesis around (5x) 2cosx + cos * 5x + cos(x) = 0 Reorder the terms for easier multiplication: 2cosx + 5cos * x + cos(x) = 0 Multiply cos * x 2cosx + 5cosx + cos(x) = 0 Multiply cos * x 2cosx + 5cosx + cosx = 0 Combine like terms: 2cosx + 5cosx = 7cosx 7cosx + cosx = 0 Combine like terms: 7cosx + cosx = 8cosx 8cosx = 0 Solving 8cosx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Divide each side by '8'. cosx = 0 Simplifying cosx = 0 The solution to this equation could not be determined.
| a+5+a+5+b+3+b+3= | | 1=9-4 | | 2+3y=38 | | 16-5x=34 | | x^2-20+3x=0 | | 16=3(x-3)-(x-7) | | 4r(4R)+48=4r+24+4r(4r)-8r | | (x-0.65)/x=0.25 | | f/4=12/9 | | 300x-1500=24000 | | 9m-4=-2+8m | | 9r-20=48+2r | | f/7=12/24 | | 178/v=623/336 | | 880/240=11/p | | 4/3=d/384 | | f/6=10/5 | | 8x+9y-6z= | | 155/210=62/y | | 35/m=490/616 | | x^2+6x-7=3x-3 | | 34/m=490/616 | | 34/m=490/16 | | 2x-3=53.2 | | 20logx=0.05 | | -18y^2+50=0 | | 783/t=348/232 | | 80/48=100/k | | 72/48=6/f | | 3p-15=p | | 77/d=44/48 | | 2/n=26/78 |