I NEED THE ANSWER FOR NUMBER 1
1 answer:
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Given:
A regular polygon with three vertices and side 14 cm.
To find:
Area of the regular polygon.
Solution:
We know that, a regular polygon has equal sides and equal interior angles.
The given regular polygon has three equal sides, it means it is an equilateral triangle.
The area of an equilateral triangle is:
Where, a is the side length of the triangle.
Putting , we get
Therefore, the area of given regular polygon is 84.9 cm².
Answer:
= -0.5 + 1.5i
Step-by-step explanation:
Given 3+i divided by -2i ⇒
By multiplying the numerator and the denominator by the conjugate of (-2i) which will be equal (2i)
So, =
We should know that: i = √(-1) ⇒ i² = -1
∴
∴ = -0.5 + 1.5i