Question

How do you add `(1+8i)+(4-i)` in trigonometric form?

Answer 1

5 + 7i

Explanation:

if (a + bi) and (c + di) are 2 complex numbers. To add/subtract them add subtract the real terms together and similarly for the imaginary terms

hence a + bi + c + di = (a + c ) + (b + d )i

here: 1 + 8i +4 - i = (1+4) + (8-1)i = 5 + 7i