We can use tan(x) = sin(x)/cos(x). Plug in numbers to get:
tan(x+pi/2) = sin(x+pi/2)/cos(x+pi/2)
Here, you can use the sin and cos addition identity:
tan(x+pi/2) = (sin(x)cos(pi/2)+cos(x)sin(pi/2))/(cos(x)cos(pi/2)+sin(x)sin(pi/2))
If you simplify this, you get:
0+cos(x)/0-sin(x)
Which is the definition of cot(x). But, we can't forget about the '-' sign, so, the answer is -cot(x)
The slope would be D. -4
Because it is going down 4 units negatively and going one unit to the right
The slope of the line is -4/5
y2-y1
———-
x2-x1
You have to apply the points into this equation
6-10
——- = -4/5
-3+8
Answer:
x<(-10)
I hope it will be useful.
Step-by-step explanation:
2x > 3x + 10