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harshit agarwal Grade: 12
        

cot¯¹ n/Π>Π/6 n belongs to natural numbers, then the maximum value of n is


(a) 1


(b) 5


(c) -5


(d) none of these

7 years ago

Answers : (2)

Ramesh V
70 Points
										



     


4076-74_5850_cotx.gif


From the graph ,we can see that cot x is periodic function with period as  Π .


hence ,cot¯¹ n/Π > Π/6  can be found only for ( 0 , Π )


                       n/Π > cot Π/6


                       n/Π > 31/2


                       n >  Π.31/2


                       n > 5.43  or n>=6  


answer: none of these


--


regards


Ramesh

7 years ago
A B
11 Points
										Actually since cos is a decreasing function for the specified range therefore n
										
2 months ago
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