Answer:
107.8°
Step-by-step explanation:
Here we use the inverse tangent function to determine the angle (direction) of the boat.
"16 km west and 50 km north" places us in Quadrant III. One way in which to determine the angle in question, measured from the positive x-axis, is to find the value of arctan 50/16 and then subtract this angle from 180° (or from π radians).
This results in π - arctan 50/16, or
π - 1.26 radians, or 180° - 72.2°, or 107.8°
The boat's direction is 107.8° as measured counterclockwise from the positive x-axis (that is, from ∅ = 0°).
Answer: Sure what you having trouble with?
Step-by-step explanation:
.........................It is 40.
Answer:
-2/1
Step-by-step explanation:
hope this helps
Answer:
19.2
Step-by-step explanation:
You get the mean of a set of numbers by adding them and dividing the sum by how many numbers there are. In this case, you don't know what the individual 8 numbers are, but you can find out what they add up to.
Mean = (sum) / 8
17 = (sum) / 8
17 x 8 = sum
136 = sum
Now take out the numbers 9, 11, 20, which reduces the sum by 40. There are 5 numbers left and they add up to 136 - 40 = 96.
The new mean is 96 / 5 = 19.2
