Step-by-step explanation:
The angle of incidence is equal to the angle of reflection.
So if the total angle ROQ = i+r = 124. The angle of reflection, r must be half of this = 62.
Angle POK is a right angle, so to find angle ROK, we do 90-62 = 28
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The difference of squares is:
(x+i√3)(x-i√3)
So the correct option is the last one, D.
<h3>
Which expression gives x^2 + 3?</h3>
For a complex number:
We define the complex conjugate of Z as:
Such that the product between the complex number and its complex conjugate gives:
Now, of you look at option D, you can see we have the product of a number and its conjugate, then we can write the product and use the above rule to get:
Which is what we wanted to get, so that is the correct option.
If you want to learn more about complex numbers:
brainly.com/question/10662770
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I need help on this too!!!
"−5 − 4i" is the one among the following expressions given in the question that <span>is the conjugate of a complex number with −5 as the real part and 4i as the imaginary part. The correct option among all the options that are given in the question is the third option. I hope that this is the answer that has helped you.</span>
