Math Problem Statement

simplify tan(sin−1(x))

Solution

To simplify tan(sin1(x))\tan(\sin^{-1}(x)), follow these steps:

  1. Let θ=sin1(x)\theta = \sin^{-1}(x), which implies that sin(θ)=x\sin(\theta) = x.

    • Since θ=sin1(x)\theta = \sin^{-1}(x), it means θ\theta is an angle whose sine is xx, or sin(θ)=x\sin(\theta) = x.
    • This gives us the identity sin(θ)=x1\sin(\theta) = \frac{x}{1}, meaning the opposite side is xx and the hypotenuse is 11 in a right triangle.
  2. Use the Pythagorean theorem to find the adjacent side.

    • The Pythagorean theorem states hypotenuse2=opposite2+adjacent2\text{hypotenuse}^2 = \text{opposite}^2 + \text{adjacent}^2.
    • Therefore, 12=x2+adjacent21^2 = x^2 + \text{adjacent}^2, so adjacent=1x2\text{adjacent} = \sqrt{1 - x^2}.
  3. Now, the tangent of θ\theta is: tan(θ)=oppositeadjacent=x1x2.\tan(\theta) = \frac{\text{opposite}}{\text{adjacent}} = \frac{x}{\sqrt{1 - x^2}}.

Thus, the simplified form of tan(sin1(x))\tan(\sin^{-1}(x)) is: tan(sin1(x))=x1x2.\tan(\sin^{-1}(x)) = \frac{x}{\sqrt{1 - x^2}}.

Would you like further details or have any questions?

Here are 5 related questions to expand this:

  1. How do you simplify tan(cos1(x))\tan(\cos^{-1}(x))?
  2. What is the domain of tan(sin1(x))\tan(\sin^{-1}(x))?
  3. Can you find sin(tan1(x))\sin(\tan^{-1}(x))?
  4. What are the geometric interpretations of inverse trigonometric functions?
  5. How do you simplify tan(sec1(x))\tan(\sec^{-1}(x))?

Tip: Understanding the triangle relationships when dealing with inverse trigonometric functions helps in simplifying expressions quickly.

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Math Problem Analysis

Mathematical Concepts

Trigonometry
Inverse Trigonometric Functions
Pythagorean Theorem

Formulas

tan(θ) = opposite/adjacent
Pythagorean identity: hypotenuse^2 = opposite^2 + adjacent^2

Theorems

Pythagorean Theorem

Suitable Grade Level

Grades 10-12