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1 vote
Show that sin? 20° +sin? 40° + sin 80
2
(HINT: 40° = 60° -20° and 80° = 60° + 20°​

User Jbll
by
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1 Answer

5 votes

Answer:

403

Explanation:

when you use a scientific calculator cahio you would get the answer

User Duri
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