Trigonometry Examples

Find the Inverse y=-sin(x)
Step 1
Interchange the variables.
Step 2
Solve for .
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Step 2.1
Rewrite the equation as .
Step 2.2
Divide each term in by and simplify.
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Step 2.2.1
Divide each term in by .
Step 2.2.2
Simplify the left side.
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Step 2.2.2.1
Dividing two negative values results in a positive value.
Step 2.2.2.2
Divide by .
Step 2.2.3
Simplify the right side.
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Step 2.2.3.1
Move the negative one from the denominator of .
Step 2.2.3.2
Rewrite as .
Step 2.3
Take the inverse sine of both sides of the equation to extract from inside the sine.
Step 3
Replace with to show the final answer.
Step 4
Verify if is the inverse of .
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Step 4.1
To verify the inverse, check if and .
Step 4.2
Evaluate .
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Step 4.2.1
Set up the composite result function.
Step 4.2.2
Evaluate by substituting in the value of into .
Step 4.2.3
Multiply .
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Step 4.2.3.1
Multiply by .
Step 4.2.3.2
Multiply by .
Step 4.3
Evaluate .
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Step 4.3.1
Set up the composite result function.
Step 4.3.2
Evaluate by substituting in the value of into .
Step 4.3.3
The functions sine and arcsine are inverses.
Step 4.4
Since and , then is the inverse of .