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# Trigonometry Examples

Interchange the variables.

Rewrite the equation as .

Divide each term by and simplify.

Divide each term in by .

Cancel the common factor of .

Cancel the common factor.

Divide by .

Replace the with to show the final answer.

Set up the composite result function.

Evaluate by substituting in the value of into .

Cancel the common factor of .

Cancel the common factor.

Divide by .

Since , is the inverse of .