Math, asked by gaganchauhan581, 8 months ago

the principal value of tan^-1(-1) is

Answers

Answered by JONE45AVENGERS

1

Let y = tan‐¹(-1)

tan y = -1

tan y = tan(-r/4)

Range of principal value of tan ‐1

= ( -r/2, r/2)

Here principal value of tan ‐1 (-1)= -r/4

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