The reference angle is the angle made with the x-axis. For two points to have the same reference angle, they would need to have the same absolute value of their tangents = y/x.
For the first pair of points: the first point has a tangent value of 1/sqrt(3), while the second has a tangent value of sqrt(3), so these are not identical.
For the second pair of points: the first point has a tangent value of -sqrt(3), while the second has a tangent value of -1/sqrt(3), so these are
not identical.
For the third pair of points: the first point has a tangent value of sqrt(3), while the second also has a tangent value of sqrt(3), so these have the same reference angle.
For the fourth pair of points: the first point has a tangent value of
1/sqrt(3), while the second has a tangent value of sqrt(3), so these are
not identical.
So the only correct answer is the third choice.
Answer: 1/2
Step-by-step explanation:
the formula for a line is y = mx + b
m is the slope. so in the line y = 1/2x + b
1/2 is our m and therefore that’s the slope
Answer:
105
Step-by-step explanation:
The circumference of a circle is 2PiR.
Since we're just left with 8Pi, we can divide 8 by 2 to get the Radius.
Our radius is 4.
Your answer is B.)
"Twice" means to double or times by 2 and "the sum" means the addition of two numbers.
So, C. 2(y + 9) is the answer.