The Inverse Sine, Cosine, and Tangent Functions (6.5.1)

Question 1

What is the only way that allows standard trigonometric functions to be one-to-one functions?

Answer 1

• The standard trigonometric functions do not have inverses. Only by restricting the domain can you make them one-to-one functions.

Question 2

How can you dictate inverse trigonometric functions?

Answer 2

• The inverse trig functions can be indicated by a raised –1 or by the prefix “arc.”