Answer:
A.350 km/h
Explanation:
Given,
The airplane is flying 25° north of east.
The speed of this plane is, v = 820 Km/h
The speed of the plane towards the north, Vn =?
The North direction is taken as the Y-axis and the East as X-axis
The direction of the plane forms an angle 25° with the X-axis,
Then the Y component is given by the sine angle
Vn = v sin 25°
= 820 x 0.423
= 347 Km/h
Hence, the plane is traveling with a speed towards north is, V = 350 Km/h