If tan − 1 x + tan − 1 y = 5 4 π , then cot − 1 x + cot − 1 y equals, 5 π , 5 2 π , 5 3 π , π

If tan − 1 x + tan − 1 y = 5 4 π , then cot − 1 x + cot − 1 y equals

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If $\tan ^{-1} x+\tan ^{-1} y=\frac{4 \pi}{5}$, then $\cot ^{-1} x+\cot ^{-1} y$ equals

MathematicsInverse Trigonometric Functions

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Solution:

2229 Upvotes Verified Answer

The correct answer is:
$\frac{\pi}{5}$

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