Well, as the <span> apothem is = s/2*Tan(180/n). </span>
<span>5 = S/2*Tan(180/3), S = 17.32 cm. </span>
<span>P = 17.32 + 17.32 + 17.32 = 52 cm.
So your option will be the second one: B. 52 cm.
Hope this is useful</span>
Answer:

Step-by-step explanation:
Angles in a triangle add up to 180°


Angles on a straight line add up to 180°


we have the function

Part a
For t=7
substitute in the given function

For t=14

For t=21

For t=28

For t=35

Observation: The values of E varies from -1 to 1, including the zero
Part B
Remember that
The Period goes from one peak to the next
so
Period=2pi/B
B=pi/14
Period=(2pi)/(pi/14)=2pi*14/pi=28
<h2>the period is 28 days</h2>
Hello,
If the question is to simplify then

