Question

find the modulus and amplitude of 4/-1+√-3​

Answer 1

Answer:

z=4/-1+√-3 = 4/-1+3i = 4/-1+3i = -2/5 + 6/5i

r= ।z।= √ (-2/5)² + (6/5)² = √40 /25 = 2√2/√5

let the angle by tan a = । img/re। = 6/2 = 3

a= tan¹ (3)