In order to find the product of two complex numbers their magnitudes are multiplied and their arguments(measure of angles) are added up.

For z₁
Magnitude = 4
Argument = π/3

For z₂
Magnitude = 3
Argument = 2π/5

So, the product of z₁ and z₂ will be:

$z_{1} z_{2} =4*3(cos( \frac{ \pi }{3}+\frac{2 \pi }{5})+isin( \frac{ \pi }{3}+\frac{2 \pi }{5})) \\ \\ 
z_{1} z_{2} =12(cos( \frac{11 \pi }{5}+isin( \frac{11 \pi }{5}))$

6 0

3 years ago

HI Please try to answer it and reply below: Find the cost of fencing a square park of side 125m at a rate of Rs. 15 per meter Pl

Ainat [17]

Answer: Rs7500

Step-by-step explanation:

First and foremost, we should realise that a square has 4 sides. Therefore, the total sides of the square will be:

= 125m × 4

= 500m

Since the rate is Rs15 per meter, then the cost of the fencing will be:

= 500 × Rs15

= Rs7500

3 0

3 years ago