if you’re solving for y then just subtract 9.4 from -12.2 or -12.2 minus 9.4. A positive number subtracted from a negative number is the same as two negative numbers being combined together, so just add 9.4 and 12.2 and put a negative sign in front of the answer and that is what y equals. -12.2 + -9.4 = -21.6 = y
where s is the arc length, r is the radius, and θ is the central angle in radians. Your arc subtends an angle of 12° = (12·π/180) = π/15 radians. The length of the arc is then ...
