Solving the trigonometric equation, it is found that, in degrees: [tex]\theta = 0, \theta = 360[/tex].
The equation is:
[tex]\cos{\theta} = 1[/tex]
Looking at the trigonometric circle, we have that in the first lap of the circle [tex]\cos{\theta} = 1[/tex] for [tex]\theta = 0, \theta = 2\pi[/tex].
- Hence, in degrees, as 180º is [tex]\pi[/tex] rad, the solutions are 0º and 180º.
Then, in degrees: [tex]\theta = 0, \theta = 360[/tex].
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