30/50 of earth atomospere is made up nitrogen while only 21/100 is made up of oxygen what fraction of earth atmosphere is either
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well, let's say we know "r" and also "y", can we get the angle and the rectangular "x"?
and once we know what angle θ is, since x = rcos(θ), we know "r" already, and we know θ as well, so we know "x" as well.
The photo has the work you need
