tan(x)/csc(x) = sec(x)-cos(x)

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1 Answer

Take the left-hand side and rewrite in terms of sin and cos:

sin²(x)/cos(x)=(1-cos²(x))/cos(x)=

1/cos(x)-cos(x)=

sec(x)-cos(x) QED

by Top Rated User (1.2m points)

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