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Question

Question: Bhai ek pal store tan inverse tan half in terms of time...

Bhai ek pal store tan inverse tan half in terms of time

Answer

12\frac{1}{2}

Explanation

Solution

We use the identity tan1(tanx)=x\tan^{-1}(\tan x) = x, which is valid when xx lies in the principal range of the arctangent function, i.e., x(π2,π2)x \in (-\frac{\pi}{2}, \frac{\pi}{2}). In this case, x=12x = \frac{1}{2}. Since π2<12<π2-\frac{\pi}{2} < \frac{1}{2} < \frac{\pi}{2}, the value 12\frac{1}{2} is within the principal range. Therefore, tan1(tan(12))=12\tan^{-1}(\tan(\frac{1}{2})) = \frac{1}{2}.