4(4/5) + √(4/5) + 0.2 - 5(4/5)
= 16/5 + (2√5/5) + (1/5) - 4
= (16 + 2√5 + 1 - 20)/5
= (2√5 - 3)/5 or 0.29442719
Answer:
a) 
b) 
Step-by-step explanation:
Polar coordinates are represented as:
, where 'r' is the length (or magnitude) of the line, and '
' is the angle measured from the positive x-axis.
in our case:

to covert the polar to cartesian:


we can plug in our values:


the Cartesian coordinates are:


(b) to convert (x,y) = (6.06,-3.5)
we'll use the pythagoras theorem to find 'r'



the angle can be found by:




to convert radians to degrees:

writing in polar coordinates:
