Let z = sin(x).
.. z^2 -2z = 2
.. z^2 -2z +1 = 3
.. (z -1)² = 3
.. z -1 = ±√3
.. z = 1 -√3 . . . . . the positive solution is extraneous
sin(x) = 1 -√3
Answer:15
Step-by-step explanation:
The point-slope form:

We have the points (-5, 15) and (20, 25). substitute:

Answer:
point-slope form: 
slope-intercept form: 
standard form: 
General Idea:
The measure of one of the central angles of a regular Polygon (
) can be used using the below formula:

Applying the concept:
The measure of one of the central angles of a regular octagon.
The octagon have 8 sides, using the above formula we get...

Conclusion:
The correct option is <em><u>A) 45 degrees</u></em>