The figure is used as part of a visual description of an algebraic statement. Which of the following can be that algebraic state
ment?
A.a^2 +b^2=c^2
B.1/2 (a+b) =c
C.a•b=c
D.a^2•b^2=c^2
A.a^2 +b^2=c^2
B.1/2 (a+b) =c
C.a•b=c
D.a^2•b^2=c^2
1 answer:
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Let . Then
lies in the second quadrant, so
So we have
and the fourth roots of are
where . In particular, they are