SOLUTION: I have to find the exact value for this trigonometric expression. Help? :( tan(cos^-1 (1/3)) = ??

SOLUTION: I have to find the exact value for this trigonometric expression. Help? :( tan(cos^-1 (1/3)) = ??

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Question 1030474: I have to find the exact value for this trigonometric expression. Help? :(
tan(cos^-1 (1/3)) = ??
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
Draw a triangle where the angle has a cosine of 1/3. The opposite side must be sqrt(8) or 2sqrt(2). Thus the tangent must be 2*sqrt(2)/1 = 2*sqrt(2).
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