SOLUTION: Solve for x: (this will be an inverse trigonometric expression, not a numeric answer). y=5cos(x/3)

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Question 918950: Solve for x: (this will be an inverse trigonometric expression, not a numeric answer). y=5cos(x/3)
Answer by Edwin McCravy(20065) About Me  (Show Source):
You can put this solution on YOUR website!
y=5cos%28x%2F3%29

Divide both sides by 5 to isolate the cosine:

y%2F5=cos%28x%2F3%29

Now we take the inverse cosine of both sides:

%22%22=%22%22%22cos%22%5E%28-1%29cos%28x%2F3%29

On the right the inverse cosine cancels the cosine

%22%22=%22%22x%2F3

Multiply both sides by 3

%22%22=%22%22x

Edwin