De4kTamaman
De4kTamaman
11-06-2016
Mathematics
contestada
If the value of sinx=0.42, what is cos x?
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Tareki
Tareki
13-06-2016
from the relation of
sin(x)^2 + cos(x)^2 = 1
(0.42)^2 + cos(x)^2 = 1
cos(x)^2 = 1 - (0.42)^2
cos(x) = √(1-(0.42)^2)
cos(x) = 0.9075
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