Question

8. The coordinates of any point on the circle \( x^{2}+y^{2}=4 \) are a) \( (\cos \alpha, \sin \alpha) \) b) \( (4 \cos \alpha, 4 \sin \alpha) \) c) \( (2 \cos \alpha, 2 \sin \alpha) \) d) \( (\sin \alpha, \cos \alpha) \)

Answer 1

The coordinates of any point on the circle x² + y² = 4 are: c) ( 2 cos α , 2 sin α )