The relationship between <2 and <3
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Supplementary.

Step-by-step explanation:

In this case when put together, ∠2 & ∠3 create a straight line. A straight line is 180° in measurement, and the two angles are supplementary.

If the two angles meet together and create a right angle, then they are complementary, as, when combined, the two angles will form a 90° measurement.

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since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

ok

step-by-step explanation: