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If the value, to the nearest thousandth, of cos α is −0.385, which of the following could be true about α?
  • a)
  • b)
  • c)
  • d)
  • e)
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
If the value, to the nearest thousandth, of cos α is −0.38...
You must know something about the values of cosine functions at certain values of α to answer this question correctly. Work through each of the answer choices, as follows:
Answer choice A:  When α is  when α is π, cos α = −1. The value −0.385 is not between  so eliminate answer choice A.
Answer choice B:  When α is  The value −0.385 is between 0 and  so answer choice B is correct.
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Most Upvoted Answer
If the value, to the nearest thousandth, of cos α is −0.38...
You must know something about the values of cosine functions at certain values of α to answer this question correctly. Work through each of the answer choices, as follows:
Answer choice A:  When α is  when α is π, cos α = −1. The value −0.385 is not between  so eliminate answer choice A.
Answer choice B:  When α is  The value −0.385 is between 0 and  so answer choice B is correct.
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If the value, to the nearest thousandth, of cos α is −0.385, which of the following could be true about α?a)b)c)d)e)Correct answer is option 'B'. Can you explain this answer?
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