Evaluate the expression: tan^(-1)(1) + tan^(-1)(√3).

Practice Questions

Q1
Evaluate the expression: tan^(-1)(1) + tan^(-1)(√3).
  1. π/3
  2. π/2
  3. 2π/3
  4. π

Questions & Step-by-Step Solutions

Evaluate the expression: tan^(-1)(1) + tan^(-1)(√3).
Correct Answer: 7π/12
  • Step 1: Understand that tan^(-1)(x) means the angle whose tangent is x.
  • Step 2: Find tan^(-1)(1). The angle whose tangent is 1 is π/4 (or 45 degrees).
  • Step 3: Find tan^(-1)(√3). The angle whose tangent is √3 is π/3 (or 60 degrees).
  • Step 4: Add the two angles together: π/4 + π/3.
  • Step 5: To add π/4 and π/3, find a common denominator. The common denominator of 4 and 3 is 12.
  • Step 6: Convert π/4 to twelfths: π/4 = 3π/12.
  • Step 7: Convert π/3 to twelfths: π/3 = 4π/12.
  • Step 8: Now add the two fractions: 3π/12 + 4π/12 = 7π/12.
  • Step 9: The final answer is 7π/12.
  • Inverse Trigonometric Functions – Understanding the values of inverse tangent functions, specifically tan^(-1)(1) and tan^(-1)(√3).
  • Angle Addition – Adding angles in radians and converting them to a common denominator.
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