Answer:
If f( x) = sin x, then f′( x) = cos x.If f( x) = cos x, then f′( x) = −sin x.If f( x) = tan x, then f′( x) = sec 2 x.If f( x) = cot x, then f′( x) = −csc 2 x.If f( x) = sec x, then f′( x) = sec x tan x.If f( x) = csc x, then f′( x) = −csc x cot x.
