Answer:
The exact value of \(cos(-60\°)=(1/2)\)
Step-by-step explanation:
we know that
The angle \(-60\°\) belong to the fourth quadrant
The function cosine is positive in the first and in the fourth quadrant
so
\(cos(-60\°)=cos(60\°)\)
Remember that
\(cos(60\°)=(1/2)\)
so
\(cos(-60\°)=(1/2)\)
