# Answer to Question #19399 in Trigonometry for mary

Question #19399

tan x sin x = sec x - cos x

Expert's answer

tanxsinx=secx-cosx

sin^2x/cosx=secx-cosx

sin^2x=cosxsecx-cosx^2

sin^2x+cos^2x=1

1=1

sin^2x/cosx=secx-cosx

sin^2x=cosxsecx-cosx^2

sin^2x+cos^2x=1

1=1

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