Question

Given cos A = -.45 find angle A in degrees. Round your answer to the nearest hundredth.

Answer 1

Draw a unit circle.

Answer 2

Look at a typical angle in standard position of measure \(\theta\).

The point where the terminal side of the angle intersects the unit circle
has coordinates \((\cos \theta, \sin \theta)\).

Do you understand so far?

Answer 3

sort of. Math is my weakest subject... that point is where it intersects the circle?