Jbullon119
19.08.2019 •
Mathematics
If 0° < x° < 90° and sin x = 1/2 , then cos x = ?
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Ответ:
2^2 = 1^2 + x^2
x = sqrt(3) = adj
Cosx = adj/hyp = sqrt(3)/2
Ответ:
The answer is C
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