Answer:
-963
Step-by-step explanation:
A'(- 4, 3 )
Under a counterclockwise rotation about the origin of 90°
a point (x, y ) → (- y, x )
A(3, 4 ) → A'(- 4, 3 )
Answer:sin240
Sin300=(-√3)/2
Sin240=(-√3)/2
So sin300 is equivalent to sin240
I can but why?