X=7 (let me know if you would like to know how I got the answer)
Answer:

Step-by-step explanation:
step 1
Find the area of the circle
The area of the circle is equal to

we have


substitute


step 2
we know that
The area of a circle subtends a central angle of 2π radians
so
using proportion
Find out the area of a sector with a central angle of 8 π/11 radians

The y variable stands for the y value in an equation like x+y=1
<h3>⚠ANSWER⚠</h3>
<em><u>↪</u></em><em><u>Given 15 cot A = 8. Find sin A and sec A </u></em>
Hope this helps...☆