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1 vote
Use a double-angle identity to find the exact value of each expression.
sin 90°

User Abisko
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2 Answers

6 votes
1 is going to be your correct answer
User Opsmason
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4 votes

Answer:

1

Explanation:


\sin 2x=2\sin x \cos x \\ \\ \sin 90^(\circ)=2\sin 45^(\circ) \cos 45^(\circ) \\ \\ =2(1/√(2))(1/√(2)) \\ \\ =2(1/2) \\ \\ =1

User Killerbeans
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