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OpenStudy (anonymous):
Given sinx=1/2 and tan x<0, find cosx
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Nnesha (nnesha):
tan x is less than 0 so it should be in either 2nd or 3rd quadrant |dw:1432000543742:dw|
OpenStudy (anonymous):
No, the 2nd or 4th
Nnesha (nnesha):
bec sin x = 1/2 sin is positive use CAST rule to figure it out |dw:1432000617823:dw|
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