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if a plane leaves a horizontal at an angle of 60 degrees and at 1 minute reaches a point of 12 miles how fast is the plane going....

"reaches a point of 12 miles" is ambiguous.

Do you mean 12 miles in the air (elevation), perpendicular to the ground?

Or, do you mean 12 miles from the point at which the plane took off?

a rocket ascends at angle of 60 degrees
with the horizontal. after 1 minute
it is directly over a point that is a horizontal distance of 12 miles from
launch point. what is the speed of the
rocket? thanks

Cos 60 = X/12 where x is the length of the hypotenuse of the triangle. That is the distance traveled in 1 min. Post your work if you get stuck.

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