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barnita mishra Grade: 12
        

arc tan|tanx|= |x|  true or false?

7 years ago

Answers : (1)

Rathod Shankar AskiitiansExpert-IITB
69 Points
										

1) take angle as  x=135


 


arc tan|tanx| = arc tan|tan135|= arc tan|-1|=  arc tan(1) = 45


|x|=135     WHICH IS NOT CORRECT so it is not True


 


true only in the   1st cordinant that is from [0, pi/2] and the fourth


the range of tanx is between [-90,90] so it is not true in 3 quadrants


 


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7 years ago
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