21sin(x)cos(x)=-6cos(x)

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Solution for 21sin(x)cos(x)=-6cos(x) equation:


Simplifying
21sin(x) * cos(x) = -6cos(x)

Multiply ins * x
21insx * cos * x = -6cos(x)

Multiply insx * cos
21cinos2x * x = -6cos(x)

Multiply cinos2x * x
21cinos2x2 = -6cos(x)

Multiply cos * x
21cinos2x2 = -6cosx

Solving
21cinos2x2 = -6cosx

Solving for variable 'c'.

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

Add '6cosx' to each side of the equation.
21cinos2x2 + 6cosx = -6cosx + 6cosx

Combine like terms: -6cosx + 6cosx = 0
21cinos2x2 + 6cosx = 0

Factor out the Greatest Common Factor (GCF), '3cosx'.
3cosx(7insx + 2) = 0

Ignore the factor 3.

Subproblem 1

Set the factor 'cosx' equal to zero and attempt to solve: Simplifying cosx = 0 Solving cosx = 0 Move all terms containing c to the left, all other terms to the right. Simplifying cosx = 0 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 '(7insx + 2)' equal to zero and attempt to solve: Simplifying 7insx + 2 = 0 Reorder the terms: 2 + 7insx = 0 Solving 2 + 7insx = 0 Move all terms containing c to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 7insx = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 7insx = 0 + -2 7insx = 0 + -2 Combine like terms: 0 + -2 = -2 7insx = -2 Add '-7insx' to each side of the equation. 7insx + -7insx = -2 + -7insx Combine like terms: 7insx + -7insx = 0 0 = -2 + -7insx Simplifying 0 = -2 + -7insx 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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