Inverse Trigonometric Functions
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Questions and Answers

What is the range of the function sin–1?

  • [0, π]
  • [–π/2, π/2] (correct)
  • [0, 2π]
  • [–1, 1]
  • Which of the following functions is defined for the range R – (–1, 1)?

  • tan–1
  • cosec–1 (correct)
  • sin–1
  • cos–1
  • What is the correct interpretation of sin–1x?

  • The same as (sin x)–1
  • The angle whose sine is x (correct)
  • The reciprocal of sin x
  • The value of sin x at x
  • What is the principal value of cot–1(3)?

    <p>π/3</p> Signup and view all the answers

    Which function has a range of (0, π)?

    <p>cot–1</p> Signup and view all the answers

    What is the principal value range for the sec–1 function?

    <p>[0, π/2) ∪ (π/2, π]</p> Signup and view all the answers

    For which value is sin–1(1/2) equal to?

    <p>π/3</p> Signup and view all the answers

    Which of the following statements is false regarding inverse trigonometric functions?

    <p>cot–1 is only defined for positive values.</p> Signup and view all the answers

    Which of the following ranges belongs to the function sin–1?

    <p>(−π/2, π/2)</p> Signup and view all the answers

    What is the result of sin–1(−1)?

    <p>−$ rac{ heta}{2}$</p> Signup and view all the answers

    If sin–1 x = y, which statement is true about y?

    <p>$− rac{ heta}{2} &lt; y &lt; rac{ heta}{2}$</p> Signup and view all the answers

    Which expression evaluates to π/3?

    <p>cos–1(1/2)</p> Signup and view all the answers

    What is the sum of tan–1(1) and cos–1(1/2)?

    <p>$ rac{π}{2}$</p> Signup and view all the answers

    What is the value of tan–1(−3) given the properties of inverse functions?

    <p>−$ rac{π}{3}$</p> Signup and view all the answers

    What is the valid range for x when using the equation $y = sin^{-1} x$?

    <p>x ∈ [-1, 1]</p> Signup and view all the answers

    Which identity is correct for the equation $sin^{-1}(sin y)$?

    <p>sin^{-1}(sin y) = y, y ∈ [-π/2, π/2]</p> Signup and view all the answers

    What is the result of $sin^{-1}(2sinθcosθ)$?

    <p>2θ</p> Signup and view all the answers

    When working with inverse trigonometric functions, which statement is correct about their domains?

    <p>They have specific domains for certain values of x.</p> Signup and view all the answers

    For the relation $sin^{-1}(2x(1-x^2)) = 2sin^{-1} x$, what is the condition for x?

    <p>0 ≤ x ≤ 1</p> Signup and view all the answers

    In the equation $sin^{-1}(2x(1-x^2)) = 2cos^{-1} x$, what is the required range for x?

    <p>0 ≤ x ≤ 1</p> Signup and view all the answers

    What is the expression for $tan^{-1}$ in its simplest form as mentioned?

    <p>Not provided in the content.</p> Signup and view all the answers

    What is the equivalent relationship when $y = cos^{-1}x$?

    <p>cos y = x</p> Signup and view all the answers

    What is the range of the function y = sin–1 x?

    <p>[−π/2, π/2]</p> Signup and view all the answers

    Which of the following equations relates to y = tan–1 x?

    <p>y = cot–1 x</p> Signup and view all the answers

    What is the domain of the function y = cosec–1 x?

    <p>R – (−1, 1)</p> Signup and view all the answers

    For the equation sin–1(1 – x) – 2 sin–1 x = π/2, what is one possible value of x?

    <p>1/2</p> Signup and view all the answers

    Which statement correctly describes the inverse trigonometric function y = cos–1 x?

    <p>Domain: [−1, 1]; Range: [0, π]</p> Signup and view all the answers

    What is the relationship between sin(tan–1 x) and x for |x| < 1?

    <p>sin(tan–1 x) = x/(1 + x^2)</p> Signup and view all the answers

    Which of the following accurately describes the output range of y = sec–1 x?

    <p>[0, π] – {π/2}</p> Signup and view all the answers

    What is the simplest form of cot(2/(x - 1)), where x > 1?

    <p>sec^(-1)(x)</p> Signup and view all the answers

    Which identity is used when rewriting tan^(-1)(cos x)/(1 - sin x)?

    <p>tan^(-1)(1 - sin^2(x))</p> Signup and view all the answers

    What relationship holds true based on the simplification of tan^(-1)(cos^2(x) - sin^2(x))?

    <p>tan^(-1)(cos x - sin x)</p> Signup and view all the answers

    What final form does tan^(-1)(1/(1 - sin x)) achieve following the simplifications shown?

    <p>tan^(-1)(cot(x/2))</p> Signup and view all the answers

    In the expression tan^(-1)(cos(x)/ (1 - sin(x))), which of the following represents the denominator correctly?

    <p>1 - sin(x)</p> Signup and view all the answers

    What is the value of the expression tan^(-1)(1/(sin x + cos x)) equal to after manipulation?

    <p>tan^(-1)(tan(x/2))</p> Signup and view all the answers

    Which of the following correctly represents the conversion from sec^(-1)(x) to a cotangent form?

    <p>cot(θ)</p> Signup and view all the answers

    What is the simplified outcome of cos^2(x) + sin^2(x) as described in the content?

    <p>1</p> Signup and view all the answers

    What is the principal value of an inverse trigonometric function?

    <p>The value that lies in its principal value branch</p> Signup and view all the answers

    Which of the following correctly expresses the relationship between y = sin^(-1)(x) and x?

    <p>x = sin(y)</p> Signup and view all the answers

    Who is credited with providing formulae to find the sine values for angles greater than 90°?

    <p>Bhaskara I</p> Signup and view all the answers

    In the equation sin(sin^(-1)(x)) = x, what can be concluded about the inputs?

    <p>x must lie within the range of [-1, 1]</p> Signup and view all the answers

    Which mathematician suggested the symbols sin^(-1)(x) and cos^(-1)(x) for arc sine and arc cosine functions?

    <p>Sir John F.W. Herschel</p> Signup and view all the answers

    What was the primary method used by Thales to determine the height of the pyramid?

    <p>Using similar triangles</p> Signup and view all the answers

    Which of the following historical figures is associated with the first significant study of trigonometry?

    <p>Aryabhata</p> Signup and view all the answers

    What is the significance of the siddhantas in relation to modern trigonometric functions?

    <p>They provided foundational concepts for sine functions</p> Signup and view all the answers

    Study Notes

    Inverse Trigonometric Functions

    • Inverse trigonometric functions exist for functions that are one-to-one and onto.
    • Trigonometric functions are not one-to-one over their natural domains and ranges, so their inverses do not exist initially.
    • Restrictions on the domains and ranges of trigonometric functions are necessary to create inverses.
    • Inverse trigonometric functions are essential in calculus to define integrals.
    • They are also used in science and engineering.

    Basic Concepts

    • Trigonometric functions like sine, cosine, tangent, cotangent, secant, and cosecant are defined.
    • Their domains are specified (e.g., sine: R → [-1, 1]).
    • Inverse functions are denoted using the superscript -1 (e.g., sin⁻¹).

    Inverse Trigonometric Functions

    • The domain of a trigonometric function becomes the range of its inverse.
    • The range of a trigonometric function becomes the domain of its inverse.
    • There exists a principal value branch for each inverse function.

    Properties of Inverse Trigonometric Functions

    • Inverse trigonometric functions have properties similar to other inverse functions.
    • They are valuable in specific contexts within their domains.
    • Examples demonstrating usage of these functions are included, in multiple ways across several examples.

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    Description

    Test your understanding of inverse trigonometric functions and their applications in calculus, science, and engineering. This quiz covers the essential concepts, including domain restrictions and properties of these functions. Challenge yourself with questions about sine, cosine, and their inverses.

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