RD Sharma - Mathematics (Volume 1)

Book: RD Sharma - Mathematics (Volume 1)

Chapter: 4. Inverse Trigonometric Functions

Subject: Maths - Class 12th

Q. No. 8 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:

What is the value of ?

We know that sin-1 (sin θ) = π – θ, if θ [π/2, 3π/2] and cos-1 (cos θ) = θ, if θ [0, π]


= π


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