a child throws a ball with a speed of 6 feet per second at an angle of 67 degrees with the horizontal.

The horizontal component is given by

[6cos(67)] i = 2.344386770934 i

And the vertical component is given by

[6sin(67)] j = 5.523029120712 j

So in vector terms we have

v = 2.344386770934 i  +  5.523029120712 j

(I believe that's the correct notation....one of our excellent answerers - Alan - can look this over and tell me if I've missed anything !!!)

Spot on Chris!