Please help

The initial velocity of a particle is 15 m s¹ in the Ox direction. After some time, its velocity is 15 m s¹ at an angle of 60° to Ox. (All directions are shown by measuring angles anti-clockwise from the direction Ox.) What is the change of velocity that has taken place during this time? ​

Please helpThe initial velocity of a particle is 15 m s in the Ox direction After some time its velocity is 15 m s at an angle of 60 to Ox All directions are sh class=
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