<PRE><B>Question 966467</B>
Evaluate: sin(Arctan 1/4)
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via calculator =~ 0.2425356
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tan = y/x = 1/4
{{{r = sqrt(y^2 + x^2) = sqrt(17)}}}
sine = {{{y/r = 1/sqrt(17)}}}
= {{{sqrt(17)/17}}}

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