A couple of shapes that have perpendicular lines are right triangles, and rectangles.
Answer: sqrt 13
Step-by-step explanation: AP EX approved
Answer:
I remember taking this it should be A
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given

Required
The phase
We have:

Rewrite as:

A cosine function is represented as:

Where:
Phase
By comparison:

Hence, the phase is: 