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If sin x = 0.5 what is the value of cos X? round the value to the nearest thousandth
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2 votes
If sin x = 0.5 what is the value of cos X?
round the value to the nearest thousandth

User Daniel Jihoon Oh
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8.0k points

2 Answers

2 votes
cos(arcsin(0.5)) = 0.866
User Red Lv
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8.3k points
5 votes
Use the inverse button on your calculator in degree mode for this. Inverse sin of .5 gives you an x value of 30 (30 degree angle, that is). Now find the cos(30) and round. cos(30) = .866
User Pavel Zdarov
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8.4k points
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