Question

maths question solve this in notebook guys find the modulus and argument of :​

Answer 1

Answer:

$\frac{(1 + 2i)(i + 3)}{(2 - i)(2 + 3i)} \\ \frac{7i + 1}{4 - 5i + 3} \\ = \frac{7i + 1}{7 - 5i} \\ = \frac{(7i + 1)(7 + 5i)}{49 + 25} \\ = \frac{54i - 28}{74} \\ = \frac{ - 28}{74} + \frac{54}{74} i$