engineering mathematics MCQ #42

If cos(θ) = 4/5, then what is the value of sin(θ)?

engineering mathematics MCQ #42

  1. Question 1

    Q1. If cos(θ) = 4/5, then what is the value of sin(θ)?

    • A) 3/5
    • B) 2/5
    • C) 1/5
    • D) 4/5

    Answer: 3/5

    Explanation: Using trigonometric identity: sin²(θ) + cos²(θ) = 1, so sin(θ) = √(1 - (4/5)²) = 3/5.