Answer:
B) It is irrational and equal to
Step-by-step explanation:
The expression, , is an irrational expression because it contains two irrational numbers, and . Both number are not perfect square. there is no whole number that would be squared that will give you 18 nor 2.
The expression can be equals the following:
Given
Required
The area of the shaded sector
This is calculated as:
This gives
B
Using the exact values
cos150° = - cos30° = -
sin150° = sin30° =
z = 4(cos150° + isin150° ) , substitute values
= 4(- + i )
= - 2 + 2i , that is
(- 2, 2 ) → B
-2s
2s+(-4s)
2s-4s
Hope this helps ;) ❤❤❤