Answer:
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Step-by-step explanation:
Complex numbers identity:
The complex numbers identity is:
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Square of the sum:
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In this question:
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So
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Answer:
What do you mean by writing time?
Step-by-step explanation:
Let the two sides of a right triangle be equal to one, which means that the hypotenuse is √2
Since cosa=adjacent side / hypotenuse
cos45=1/√2
We can rationalize the denominator by multiplying numerator and denominator by √2
√(2)/2
or if you prefer: √(1/2)
Good luck, I am not sure how to solve the next part of the question
Answer:
121
Step-by-step explanation:121 ! just got it right.