Tim wrote a statistical question because he is trying to figure out how many books were read in total. Jenna just wanted to know what the first book on the list was.
A. 31.5
B. I’m not sure
C. 804.25
D. 104
<u>Given</u>:
Let A denote the angle of the given triangle which measures ∠A = 81°
Let B denote the angle which measures ∠B = 40°
The length of the side a = x.
The length of the side b = 7 cm.
We need to determine the value of x.
<u>Value of x:</u>
The value of x can be determined using the law of sine formula.
Applying the law of sine, we have;

Substituting the values, we have;

Simplifying, we get;

Cross multiplying, we have;



Thus, the length of the side x is 10.8 cm.
Answer:
it's b :)
Step-by-step explanation: