Respuesta :
Answer: inverse Trigonometric functions
1. A- y=cos-1x
2. A
3. A- 39.8° and 50.2°
Using the concept of inverse trigonometry to solve the problem. Then the inverse trigonometric function has a range of (0, π) is [tex]\rm cos^{-1}x[/tex].
What is inverse trigonometry?
It is the reverse of trigonometry. They are also called arcus functions.
Given
An inverse trigonometric function has a range of (0, π).
We know the range of the following functions are;
- The cosine inverse is from (0, π).
- The sine inverse is from (-π/2, π/2)
- The tangent inverse is from (-π/2, π/2)
Thus, the inverse trigonometric function has a range of (0, π) is [tex]\rm cos^{-1}x[/tex].
More about the inverse trigonometry link is given below.
https://brainly.com/question/22698523
