Answer:
Step-by-step explanation:
a). 
= 
= 
= 
[Since, i = 
]
b). 
= 
= 
= 5 ± 2i [Since, i = ]
c). 
= 
= 
= 
= 
[Since, i = ]
Answer:
9m
Step-by-step explanation:
5 - 3 + 7 = 9
The statement that <A > <C and <B > <D has been proved
<h3>How to prove that <A > <C and <B > <D?</h3>
In geometry, the side length opposite the largest angle is the longest side.
Similarly, the side length opposite the smallest angle is the shortest side.
From the given figure of quadrilateral, we have the following sides in increasing order:
- Side length AB
- Side length BC
- Side length AD
- Side length CD
The angles opposite the side lengths are:
- Angle D
- Angle B
- Angle C
- Angle A
This means that:
<A > <C and <B > <D
Hence, the statement that <A > <C and <B > <D has been proved
Read more about mathematical proofs at:
brainly.com/question/1788884
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