SOLUTION: Given cos x  = - 1/5 and tan x  > 0, find sin x .

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Question 874406: Given cos x  = - 1/5 and tan x  > 0, find sin x .
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Given cos x  = - 1/5 and tan x  > 0, find sin x
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ABS sin%28x%29+=+sqrt%281+-+cos%5E2%28x%29%29+=+sqrt%2824%2F25%29+=+2sqrt%286%29%2F5
cos < 0 --> Q2 or Q3
tan > 0 --> Q1 or Q3
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--> Q3
In Q3 sin < 0
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sin%28x%29+=+-2sqrt%286%29%2F5