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7nadin3 [17]
3 years ago
12

The figure shows the construction steps to duplicate an angle. The steps are in an incorrect order. What is the correct order of

the steps to duplicate an angle?
A. ADFECB
B. DAFEBC
C. DFAECB
D. ADEFCB

Mathematics
1 answer:
Maru [420]3 years ago
6 0
The correct order of the steps to duplicate an angle is A. ADFECB
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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

* Lets revise the arithmetic series

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# 5 , 10 , 15 , 20 , ………………………… (constant difference is 5)

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* General term (nth term) of an Arithmetic series:  

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∵ The last term l is u8

∵ a = 75 , d = 5 , n = 8

∴ l = 75 + (8 - 1)(5) = 75 + 7(5) = 75 + 35 = 110

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∵ Sn = n/2 [a + l]

∴ S8 = 8/2 [75 + 110] = 4 [185] = 740 minutes

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