How to Determine the Aircraft's Ground Path Direction?

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To determine the aircraft's ground path direction, the wind speed was calculated to be 16.5 m/s. The aircraft is traveling due south at 44 m/s, while its resultant ground speed is 47 m/s, indicating the influence of the wind. To find the direction of the aircraft's path over the ground, using the law of sines or cosines is recommended. A diagram can aid in visualizing the vectors, as the velocities are perpendicular. Understanding these vector relationships is crucial for solving the problem accurately.
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An aircraft heads due south with a speed relative to the air of 44m/s Its resultant speed over the ground is 47 m/s The wind blows from the west. A) What is the speed of the wind? B) What is the direction of the aircrafts path over the ground?

I figured out a, 16.5 but i don't even know where to start when it comes to b except i know i need to use law of sines or law of cosines...HELP please
 
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PLEASE help me I've been working on this problem for hours
 
The velocities as vectors: vy = -44j. vx = ai
v = vy + vx
|v| = 47

Draw a diagram, and you should be able to easily solve the angle, as vx and vy are perpendicular.
 
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

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