JEE Math Practice Question
All x satisfying the inequality (cot–1 x)2– 7(cot–1 x) + 10 > 0, lie in the interval :
- A.(cot 2, $$\infty $$)
- B.(–$$\infty $$, cot 5) $$ \cup $$ (cot 2, $$\infty $$)
- C.(cot 5, cot 4)
- D.(– $$\infty $$, cot 5) $$ \cup $$ (cot 4, cot 2)
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