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How do you simplify cscx*secx-tanx?
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How do you simplify cscx*secx-tanx?

User Wonton
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csc x · sec x - tan x =
= 1 / sin x · 1 / cos x - sin x / cos x =
= 1 / sinx cos x - sin² x / sin x cos x =
= ( 1 - sin² x ) / (sin x cos x) =
= cos² x / ( sin x cos x ) =
= cos x / sin x = cot x
User Binyamin Even
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