Aperson walks in the following pattern: 2.4 km north, then 1.9 km west, and finally 4.7 km south. (a) how far and (b) at what angle (measured counterclockwise from east) would a bird fly in a straight line from the same starting point to the same final point?

a) Figure attached

b) For this case w have that A =(2.4 km)j, B= (-1.9 km) i , C= (-4.7 km)j

And the final position vector can be calculated adding the 3 vectors like this:

We can find the magnitude of s like this:

And then we can find the angle with this formula:

The other possibility is

And since they want the angle measured from East the correct angle would be

Step-by-step explanation:

Part a

On the figure attached we have the vectors for the pattern described.

Part b

For this case w have that A =(2.4 km)j, B= (-1.9 km) i , C= (-4.7 km)j

And the final position vector can be calculated adding the 3 vectors like this:

We can find the magnitude of s like this:

And then we can find the angle with this formula:

The other possibility is

And since they want the angle measured from East the correct angle would be

25 questions , because they start with 100.  

350-100=250 .  

. 250/10=25

step-by-step explanation:

first take off 100, then what x 10 = 250? that is your answer. (25)