Answer:
Step-by-step explanation:
-10 and 9
-10×9=-90
-10+9=-1
10.8 units
A,C
sin 2x=sin (x+x)=sinx cos x+cos x sin x=2 sin x cos x
or =2 cos x sin x
[sinx cox=cos x sin x ]
2.5 or 250.
