lim x → π /4 (cot ³x - tan x)/(cos (x + (π)/4)) is:

Limit, Continuity and Differentiability: JEE Main 2019 Mathematics question

JEE Main 2019 · 12 Jan, Morning shift · Q4276

JEE Main 201912 Jan, Morning shiftMathematicsHardLimit, Continuity and Differentiability420× since 2002

\mathop {\lim }\limits_{x \to \pi /4} {{{{\cot }^3}x - \tan x} \over {\cos \left( {x + {\pi \over 4}} \right)}}

is :

JEE Main 2019 · 12 Jan, Morning shift · Q4276

JEE Main 201912 Jan, Morning shiftMathematicsHardLimit, Continuity and Differentiability420× since 2002

\mathop {\lim }\limits_{x \to \pi /4} {{{{\cot }^3}x - \tan x} \over {\cos \left( {x + {\pi \over 4}} \right)}}

is :