Math Problem Statement

Solve the equation for −π ≤ θ ≤ π: 3 tan θ - 3 = 5 tan θ - 1

Solution

The problem provided is:

Solve the equation for πθπ-\pi \leq \theta \leq \pi: 3tanθ3=5tanθ13 \tan \theta - 3 = 5 \tan \theta - 1

Step-by-Step Solution:

  1. Isolate the tanθ\tan \theta terms:

    Start by subtracting 5tanθ5 \tan \theta from both sides: 3tanθ5tanθ3=13 \tan \theta - 5 \tan \theta - 3 = -1 Simplifying: 2tanθ3=1-2 \tan \theta - 3 = -1

  2. Solve for tanθ\tan \theta:

    Add 3 to both sides: 2tanθ=2-2 \tan \theta = 2 Now, divide both sides by 2-2: tanθ=1\tan \theta = -1

  3. Find the values of θ\theta:

    The equation tanθ=1\tan \theta = -1 has solutions where the tangent is 1-1. Recall that the tangent function is periodic with a period of π\pi, and the principal solutions occur at: θ=3π4,π4\theta = \frac{-3\pi}{4}, \frac{\pi}{4} These solutions are within the interval πθπ-\pi \leq \theta \leq \pi.

Final Answer:

θ=3π4,π4\theta = -\frac{3\pi}{4}, \frac{\pi}{4}

Would you like further details or have any questions?

Here are some related questions to consider:

  1. How does the periodicity of the tangent function affect its solutions?
  2. What is the general solution for tanθ=1\tan \theta = -1?
  3. Why do we only consider solutions within the interval [π,π][- \pi, \pi]?
  4. How would the solution differ if the equation was tanθ=1\tan \theta = 1?
  5. Can you extend this method to solve more complex trigonometric equations?

Tip: When solving trigonometric equations, always be mindful of the interval in which the solution is required, as trigonometric functions are periodic.

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Math Problem Analysis

Mathematical Concepts

Trigonometry
Tangent Function
Equation Solving

Formulas

tan(θ) = -1

Theorems

Tangent function periodicity
Principal solution of tangent equation

Suitable Grade Level

High School (Grades 9-12)