It mean Parentheses-exponents-multiplication/division-addition/subtraction and it is the order you do multi step equations
True the circle is a congruent to the radius of an inscribed regular polygon inside the circle
Answer:
x = 8.39
y = 55.2
Step-by-step explanation:
9² + 1² - 2(9)(1)cos(50) = x²
x = 8.39
9/sin(y) = x/sin(50)
sin(y) = 0.8215200692
y = 55.23724927