📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!


    âš¡ Month End Offer - Flat 52% Off On All Courses! Enroll Now âš¡
    00:00:00 AM Left

    Question

    In a triangle ABC, AB = AC. The length of the median

    from A to BC is 9 cm and the angle between the median and AB is 60°. Find the length of AB.
    A 8.5 cm Correct Answer Incorrect Answer
    B 18 cm Correct Answer Incorrect Answer
    C 11 cm Correct Answer Incorrect Answer
    D 9.4 cm Correct Answer Incorrect Answer

    Solution

    Given: AB = AC, median AD = 9 cm, ∠DAB = 60° In ΔABD: cos(60°) = AD / AB AB = AD / cos(60°) AB = 9 / (1/2) AB = 18 cm

    Practice Next
    ask-question