Find the value of sin-1 (sin x), x∈ [-π/2, π/2] 

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Airforce Group X 7 November 2020 Memory Based Paper
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  1. x
  2. -x
  3. π + x
  4. None of the above

Answer (Detailed Solution Below)

Option 1 : x
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Electric charges and coulomb's law (Basic)
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Detailed Solution

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Explanation:

Principal Values of Inverse Trigonometric Functions:

Function Domain Range of Principal Value
sin-1 x [-1, 1] [-π/2, π/2]
cos-1 x [-1, 1] [0, π]
csc-1 x R - (-1, 1) [-π/2, π/2] - {0}
sec-1 x R - (-1, 1) [0, π] - {π/2}
tan-1 x R (-π/2, π/2)
cot-1 x R (0, π)

 

Given: x∈ [-π/2, π/2] 

sin-1 (sin x) = x

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