Chaoyun L. answered • 11/19/15
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Master of Math with concentration in Statistics
Left side = (sinx/cosx +1)/(1/cosx)
= cosx(sinx/cosx+1)
=sinx+cosx
=right side
Billy L.
asked • 11/19/15Verify the identify
tan(x) + 1 / sec(x) = sin(x) + cos(x)
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