RD Sharma - Mathematics (Volume 1)

Book: RD Sharma - Mathematics (Volume 1)

Chapter: 4. Inverse Trigonometric Functions

Subject: Maths - Class 12th

Q. No. 39 of Very short answer

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Answer each of the following questions in one word or one sentence or as per exact requirement of the question:

Write the principal value of .

Given sin-1 (-1/2)

We know that sin-1 (-θ) = -sin-1 (θ)

= - sin-1 (1/2)

= π/6

sin-1 (-1/2) = π/6

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