When should you use a colon to introduce a quotation? when the quotation is a question

when the quotation is a single sentence

when the introduction needs the quotation to complete it

when the introduction is a complete sentence on its own

When the introduction needs the quotation to complete is the best answer.

Explanation:

Plane B was farther away from the airport when it was 22 miles from the ground because Plane B was 34.23 miles away

Step-by-step explanation:

The journey of both planes can be represented by two right angled triangles and the distance of the planes from the airport can be represented by the hypotenuse

Solution for plane A:

We have angle and side opposite to angle so we will use sine to calculate the hypotenuse:

sinθ= Opposite/hypotenuse

hypotenuse = opposite/sinθ

hypotenuse = 22/sin(44)

hypotenuse = 31.67

Plane A is 31.67 miles away from the airport

Plane B:

sinθ= Opposite/hypotenuse

hypotenuse = opposite/sinθ

hypotenuse = 22/sin(40)

hypotenuse = 34.23

It means that Plane B is 34.23 miles away from airport.

Therefore it is concluded that Plane B was farther away from the airport when it was 22 miles from the ground because Plane B was 34.23 miles away