Suppose , find .

Which of the following identities are true for all real numbers ?

Let  

Suppose is written as a single sine function in phase-angle form, .

a. Determine the period of .

b. Find the amplitude . 

c. Which quadrant is the phase angle in?

d. Find the phase angle . 

Note: This type of question is called Hybrid. In the final exam there will be no uploading options until you have finished the exam. Once you submit the exam, a QR-code will be promoted in the screen; proceed to scan the QR-code with your mobile, and then proceed to take pictures of your hybrid questions, and upload them.

Please be aware of this difference between the mock exam and the actual final exam. 

Identify the domain of

Let . Identify the inverse function .