engineering mathematics MCQ #279

If sin(θ) = 2/3, then find the value of cos(θ).

engineering mathematics MCQ #279

  1. Question 1

    Q1. If sin(θ) = 2/3, then find the value of cos(θ).

    • A) √5/3
    • B) 1/3
    • C) 2/3
    • D) 1/2

    Answer: √5/3

    Explanation: Using the Pythagorean identity, cos(θ) = √(1 - sin²(θ)) = √(1 - (2/3)²) = √5/3.