please solve this using trigonometry

. A clock has a 12 cm long second hand. Determine the average velocity of this hand in moving from the 3 to the 12 on the clock face. [Hint: A good diagram may help here. ] Use the sine and cosine law method to find the resultant velocity if a small plane moving at airspeed of 201 km/h [E 50 N] encounters a wind blowing at 50.0 km/h from the west. [Hint: A wind from the west means that the wind is blowing east.] 3. A dog walks 600.0 m [E 470 N], then 500.0 m [N 38 W], then 300.0 m [W 290 S], and finally 400.0 m [S 130 E]. Use components to find the resultant displacement of the dog