Perform the operation. 3/a^2b + 2/ab^2
1 answer:
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Answer:
B
Step-by-step explanation:
Using the exact values
cos150° = - cos30° = -
sin150° = sin30° =
Given
z = 4(cos150° + isin150° ) , substitute values
= 4(- +
i )
= - 2 + 2i , that is
(- 2, 2 ) → B
Given:
Point F,G,H are midpoints of the sides of the triangle CDE.
To find:
The perimeter of the triangle CDE.
Solution:
According to the triangle mid-segment theorem, the length of the mid-segment of a triangle is always half of the base of the triangle.
FG is mid-segment and DE is base. So, by using triangle mid-segment theorem, we get
GH is mid-segment and CE is base. So, by using triangle mid-segment theorem, we get
Now, the perimeter of the triangle CDE is:
Therefore, the perimeter of the triangle CDE is 56 units.