The helicopter flies exactly to the north, and the wind blows from east to west, as a result of which it flies at a speed of 50 m / s

The helicopter flies exactly to the north, and the wind blows from east to west, as a result of which it flies at a speed of 50 m / s at an angle of 30 ° to the meridian. What is the wind speed (m / s)?

Draw a vertical up arrow – this is the initial speed of the helicopter. The beginning of the arrow is A, the end is B. From the end draw an arrow to the left – BC. connect beginning 1 and end 2. It turns out a right-angled triangle ABC, where AC is the hypotenuse, and the angle CAB = 30 *
By the property of a triangle, a leg lying opposite an angle of 30 * is equal to half of the hypotenuse. BC (that is, the wind) is just a leg and lies against an angle of 30 *, then it is equal to 0.5 * CA = 0.5 * 50 = 25 m / s
Answer; 25 m / s