general math MCQ #575

In a triangle ABC, if angle C = 90°, angle A = 30°, and the hypotenuse AB is 10 cm, what is the length of side BC?

general math MCQ #575

  1. Question 1

    Q1. In a triangle ABC, if angle C = 90°, angle A = 30°, and the hypotenuse AB is 10 cm, what is the length of side BC?

    • A) 5√3 cm
    • B) 10√3 cm
    • C) 5 cm
    • D) 20 cm

    Answer: 5 cm

    Explanation: In a 30-60-90 triangle, the side opposite 30° is half the hypotenuse: BC = 10 × sin 30° = 5 cm.