Find the sum of 9-4i and it’s complex conjugate

1 answer:

4 0

The complex conjugate of something is essentially just taking the opposite sign of the imaginary part. The following are complex conjugates:

a + bi

a - bi

In this case the complex conjugate of 9 - 4i is 9 + 4i

Now we must add them together like so:

(9 - 4i) + (9 + 4i)

9 - 4i + 9 + 4i

^^^Combine like terms

(9 + 9) + (-4i + 4i)

18 + 0

As you can see when you add complex conjugates your answer will be a real number

Hope this helped!

~Just a girl in love with Shawn Mendes

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3 years ago

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Please help!! I’ll give branliest!!!

Ostrovityanka [42]

Answer:

4.88

Step-by-step explanation:

sinA=opposite/adjacent

sin24=x/12

12(0.40673664307)=x

x=4.88083971691