প্রশ্ন সংশোধন করুন
প্রশ্ন:
If a ladder touches the roof of a wall and makes an angle of 40 with the 15 metre ling wall , then the length of the ladder is-
If a ladder touches the roof of a wall and makes an angle of 40 with the 15 metre ling wall , then the length of the ladder is-