Math Problem Statement

Find \( \lim_{{x \to 0}} \frac{\tan(6x)}{\sin(2x)} \).

Solution

The problem you provided is:

limx0tan(6x)sin(2x)\lim_{{x \to 0}} \frac{\tan(6x)}{\sin(2x)}

To solve this, we can use limit properties for small angles. As x0x \to 0, we know that:

  1. tan(6x)6x\tan(6x) \approx 6x
  2. sin(2x)2x\sin(2x) \approx 2x

Substituting these approximations, we get:

limx0tan(6x)sin(2x)limx06x2x=limx03=3\lim_{{x \to 0}} \frac{\tan(6x)}{\sin(2x)} \approx \lim_{{x \to 0}} \frac{6x}{2x} = \lim_{{x \to 0}} 3 = 3

Therefore, the answer is:

limx0tan(6x)sin(2x)=3\lim_{{x \to 0}} \frac{\tan(6x)}{\sin(2x)} = 3

Would you like more details on any part of the solution?

Related Questions

  1. How would this solution change if the limit approached infinity instead?
  2. What if we replaced tan(6x)\tan(6x) with sin(6x)\sin(6x)? How would that affect the solution?
  3. Can this method be used for limits involving tan(kx)\tan(kx) and sin(kx)\sin(kx) as xπx \to \pi?
  4. What if we used L'Hôpital's Rule instead? Would we get the same result?
  5. How would this problem look in polar coordinates?

Tip

When evaluating trigonometric limits as x0x \to 0, substituting approximations like sin(x)x\sin(x) \approx x and tan(x)x\tan(x) \approx x can simplify the process considerably.

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Math Problem Analysis

Mathematical Concepts

Limits
Trigonometric Functions
Small Angle Approximations

Formulas

\( \tan(x) \approx x \) as \( x \to 0 \)
\( \sin(x) \approx x \) as \( x \to 0 \)

Theorems

Limit Theorems for Small Angles

Suitable Grade Level

Grades 11-12