The slope on a vertical line will be 0
The reference angle is a positive acute angle. Angle 7π/6 in radians= = 7*180°/6 = 210° ( because π rad=180°).
This angle is in the 3rd Quadrant and formula for the reference angle is:
x-180°.
210°-180°=30°
Answer: The reference angle for 7π/6 is 30°.
Answer:

Step-by-step explanation:
Given

Required
Solve

The expression can be split to:





So, we have:


Rewrite as:



Answer:

Step-by-step explanation:
Let x = calories in chocolate bar
¼x = ¼ of the calories
¼x – 10 = 10 calories less than half the calories
¼x – 10 = 70
¼x = 80
x = 320
There are
calories in the chocolate bar.
Step-by-step explanation:
let the no. be x then
3/4x-18=1/2x+5
3/4x-1/2x=18+5
1/4x=23
x=23×4
x=92