Please help me solve this equation.

What are correct trigonometric ratios that could be used to determine the length of ln

Sample response: if the graph passes the horizontaline test, then the function is one to one. functions that are one to one have inverses that a therefore, the inverse is a hinction compare your response to the sample response above. what did you include in your explanation? a reference to the horizontal-line test d a statement that the function is one-to-one the conclusion that the inverse is a function done

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.