-sin(x/((twenty-two *pi)))/(twenty-two *pi*cos(x/((twenty-two *pi)))) = zero
minus sinus of (x divide by ((22 multiply by Pi ))) divide by (22 multiply by Pi multiply by co sinus of e of (x divide by ((22 multiply by Pi )))) equally 0
minus sinus of (x divide by ((twenty minus two multiply by Pi ))) divide by (twenty minus two multiply by Pi multiply by co sinus of e of (x divide by ((twenty minus two multiply by Pi )))) equally zero
-sin(x/((22pi)))/(22picos(x/((22pi)))) = 0
-sinx/22pi/22picosx/22pi = 0
-sin(x divide by ((22*pi))) divide by (22*pi*cos(x divide by ((22*pi)))) = 0
