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# @CPhill

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A swing has a maximum height of 2 m and a minimum height of 0.5 m and it takes 3 seconds to get from the maximum height to the minimum height. Approximate the instantaneous rate of change 1 second into the fall using the difference quotient when h is 0.01.

a) -0.6823

b) -1.0856

c) -1.3650

d) -0.1973

Also:

If a point on the Cartesian plane lies at (4,2) what is the angle in radians made with the line containing the point and the origin and the negative y-axis?

a) 2.034

b)1.047

c) 0.523

d) 0.463

If my answers are correct, you don't need to show your work. Just say it's right. Thanks so much for your help in advance.

Julius  Nov 29, 2017
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Not sure about the first one, J....but the second is this :

The angle in rads is given by :

arctan (2/4)  + pi/2  =

arctan (1/2) + pi/2  =

So....you are correct.......!!!!

CPhill  Nov 29, 2017

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