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2015-08-23T20:12:17+05:30

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Sec x    and  cosec x  have the same    range :
           [1, ∞ )  U [-1 , - ∞ )

Cos x and  Sin x  : same range =  [-1, 1]

Tan x  and cot x :  have same range :  (-∞, ∞) 

1 5 1