0.2=0.6*cos*7*t

Solution for 0.2=0.6*cos*7*t equation:

Simplifying
0.2 = 0.6cos * 7t

Reorder the terms for easier multiplication:
0.2 = 0.6 * 7cos * t

Multiply 0.6 * 7
0.2 = 4.2cos * t

Multiply cos * t
0.2 = 4.2cost

Solving
0.2 = 4.2cost

Solving for variable 'c'.

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

Add '-4.2cost' to each side of the equation.
0.2 + -4.2cost = 4.2cost + -4.2cost

Combine like terms: 4.2cost + -4.2cost = 0.0
0.2 + -4.2cost = 0.0

Add '-0.2' to each side of the equation.
0.2 + -0.2 + -4.2cost = 0.0 + -0.2

Combine like terms: 0.2 + -0.2 = 0.0
0.0 + -4.2cost = 0.0 + -0.2
-4.2cost = 0.0 + -0.2

Combine like terms: 0.0 + -0.2 = -0.2
-4.2cost = -0.2

Divide each side by '-4.2ost'.
c = 0.04761904762o-1s-1t-1

Simplifying
c = 0.04761904762o-1s-1t-1