Answer:
<h2>50.8°</h2>
Step-by-step explanation:
First, we need to use the Pythagorean Theorem to find the third side. We will then use the law of cosines to find the angle.
2√15² = 2√6² + b²
60 = 24 + b²
Subtract 24
36 = b²
b = 6
Now, that we have all three sides, we will use the law of cosines to figure out the angle.
c² = a² + b² - 2abCosC°
Substitute the values in.
6² = 2√15² + 2√6² - 2(2√15)(2√6)CosC°
36 = 60 + 24 - 2(37.947331922)CosC°
36 = 60 + 24 - 75.894663844CosC°
36 = 84 - 75.894663844CosC°
Subtract 84
-48 = -75.9CosC°
0.63241106719 = CosC°
Arccos (0.63241106719) = 50.77176844°
The largest acute angle is approximately 50.8°
To find out how much time it would take for each group to tell their stories, we simply need to multiply the amount of people in each group by the amount of time it takes one member to tell a story.
We know that there are either 3 or 4 people in each group, and that it takes 3 minutes for each person to tell their stories, so we simply need to multiply
3 * 3 = 9
4 * 3 = 12
It will take either 9 or 12 minutes for each group to tell their scary stories.
Hope that helped! =)
We can find a slope by the formula:
y2-y1 = m(x2-x1)
You need to know that points.That's all! Here m is the slope.
Reflection across the line y= -x,
(x, y) —-> (-y, -x)
so, C’ will be (-1, 3), B’ will be (3, 2), and A’ will be (2, -6)
