Answer:
The slope is -2
Step-by-step explanation:
convert to slope intercept form. the number or fraction by the x when in slope intercept form is the slope.
I have no idea what did he do
Answer:
i believe C
Step-by-step explanation:
Cos -2x or -cos2x, it's the difference.
The ARC cosine of .28 = 73.74 degrees
the sine of 73.74 degrees = .96
