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Readme [11.4K]
3 years ago
8

Sin(60+a)- sin(60-a)

Mathematics
1 answer:
masya89 [10]3 years ago
3 0

Answer:

2Cos (60) sin (a)

Step-by-step explanation:

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We start out with the fact that points C and D split the semicircle into 3 sections.  This means that ∠BAC, ∠CAD and ∠DAE are all 60° (180/3 = 60).

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