a ship k is travelling at 25 km/h . another ship is h is travelling east at 17 km/h. to an observer on ship h, ship k appears to be travelling north east..<br>find the velocity of ship k<br><br>what I have tried.<br>$\displaystyle Vk = 25cosa i +25sina j $<br> $\displaystyle Vh=17i $ <br> $\displaystyle Vkh= (25cosa-17)i +25sinaj $<br><br>i and j is equal as its in a north east direction <br>25cosa-17=25sina<br>I have a feeling I am going no where<br><br><br><br>