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Question
Find the principal value of `tan^-1 (sqrt(3))`
Solution
Let y = `tan^-1 (sqrt(3))`
Where `- pi/2 ≤ y ≤ pi/2`
tan y = `sqrt(3)`
= `tan (pi/3)`
y = `pi/3`
∴ The principal value of `tan^-1 (sqrt(3)) = pi/3`
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