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Which expression has the same value as sin(20∘)?A)cos(10∘)B)cos(20∘)C)cos(40∘)D)cos(70∘)
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18 votes
18 votes
Which expression has the same value as sin(20∘)?A)cos(10∘)B)cos(20∘)C)cos(40∘)D)cos(70∘)

User Sdcvvc
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1 Answer

23 votes
23 votes

sin 20 = y / r

cos 70 = y/ r

sin 20 = cos 70 = 0.342

Answer:

cos 70

Which expression has the same value as sin(20∘)?A)cos(10∘)B)cos(20∘)C)cos(40∘)D)cos-example-1
User DubiousPusher
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