sin(2x-30)=cos(20-4x)

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Solution for sin(2x-30)=cos(20-4x) equation:


Simplifying
sin(2x + -30) = cos(20 + -4x)

Reorder the terms:
ins(-30 + 2x) = cos(20 + -4x)
(-30 * ins + 2x * ins) = cos(20 + -4x)
(-30ins + 2insx) = cos(20 + -4x)
-30ins + 2insx = (20 * cos + -4x * cos)
-30ins + 2insx = (20cos + -4cosx)

Solving
-30ins + 2insx = 20cos + -4cosx

Solving for variable 'i'.

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

Reorder the terms:
-20cos + 4cosx + -30ins + 2insx = 20cos + -4cosx + -20cos + 4cosx

Reorder the terms:
-20cos + 4cosx + -30ins + 2insx = 20cos + -20cos + -4cosx + 4cosx

Combine like terms: 20cos + -20cos = 0
-20cos + 4cosx + -30ins + 2insx = 0 + -4cosx + 4cosx
-20cos + 4cosx + -30ins + 2insx = -4cosx + 4cosx

Combine like terms: -4cosx + 4cosx = 0
-20cos + 4cosx + -30ins + 2insx = 0

Factor out the Greatest Common Factor (GCF), '2s'.
2s(-10co + 2cox + -15in + inx) = 0

Ignore the factor 2.

Subproblem 1

Set the factor 's' equal to zero and attempt to solve: Simplifying s = 0 Solving s = 0 Move all terms containing i to the left, all other terms to the right. Add '-1s' to each side of the equation. s + -1s = 0 + -1s Remove the zero: 0 = -1s Simplifying 0 = -1s The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Subproblem 2

Set the factor '(-10co + 2cox + -15in + inx)' equal to zero and attempt to solve: Simplifying -10co + 2cox + -15in + inx = 0 Solving -10co + 2cox + -15in + inx = 0 Move all terms containing i to the left, all other terms to the right. Add '10co' to each side of the equation. -10co + 2cox + -15in + 10co + inx = 0 + 10co Reorder the terms: -10co + 10co + 2cox + -15in + inx = 0 + 10co Combine like terms: -10co + 10co = 0 0 + 2cox + -15in + inx = 0 + 10co 2cox + -15in + inx = 0 + 10co Remove the zero: 2cox + -15in + inx = 10co Add '-2cox' to each side of the equation. 2cox + -15in + -2cox + inx = 10co + -2cox Reorder the terms: 2cox + -2cox + -15in + inx = 10co + -2cox Combine like terms: 2cox + -2cox = 0 0 + -15in + inx = 10co + -2cox -15in + inx = 10co + -2cox The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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