A circle with circumference, 20 has an arc with a 72∘ central angle. What is the length of the arc?

1.27

Step-by-step explanation:

The arc length formula is s = rФ, where Ф is the central angle in radians.  

Here, r = C / (2π), or  r  =20 / (6.28).

Then the arc length is s = rФ = (20/6.28)(72π/180) = 1.27

my acc plz

step-by-step explanation:

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47