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sin x/(1+cos x) + cos x / sin x

Multiply by sin x (1+cos x)

=[(sin^2 x + cos x(1+cos x) ] / sin x (1+cos x)

= [(sin^2 x + cos x + cos^2 x) ] / sin x (1+cos x)

sin^2 x + cos^2 x = 1

= (1+cos x) / sin x (1+cos x)

= 1/sin x

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โˆ™ 2010-10-22 13:45:09
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Q: How do you solve sinx divided by 1 plus cosx plus cosx divided by sinx?
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