Find the complex number (a+bi) that when added to (4-2i) equals (-2+12i)

Let the unknown number = X

Now we have X +(4-2i) = (-2+12i)

Subtract (4-2i) from both sides:

X = (−2+12i) - (4-2i)

X = -6+14i

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°

40 minutes

step-by-step explanation:

add the time and multiply by 2