Complex numbers are divided into two parts; real and imaginary parts. The value of Z3 is 
Given that:


Since O is the origin, then:

This means that:

So, we have:

Collect like terms


Hence, complex number Z3 is 
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62.71 would be the answer
Answer:
each angle is less than 90 degrees. angle 1+angle2=90 degrees
Step-by-step explanation: