Solve this :

131. The value of cos 20o 2  cot 20o is 
(a) 0                                         (b) -1
(c) 2                                         (d) 3

           
                     

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Hi Lavneesh, just by logic the correct option has to be (b)
cos 20 can be greater than 1
As we take cos 20 as common factor we have ( 1 - ​√2) = 1 - 1.414 = - 0.414

 
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