<PRE><B>Question 895685</B>
If cos(x)=3/5
Note:: Since cos(x) = a/r, a = 3 and r = 5
The b = sqrt[5^2-3^2) = 4
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find x = arccos(3/5) = 53.13 degrees
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sinx = b/5 = 4/5
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tanx = b/a = 4/3 
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and cot x = a/b = 5/4
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Cheers,
Stan H.</PRE>