Answer:
The aircraft is gaining altitude at 
Explanation:
Draw a vector diagram. (Right angle triangle speed as the hypotenuse)
Let
x -----> horizontal component of the speed
y ----> vertical component of the speed
s ----> speed in miles per hour
we know that


we have



substitute




therefore
The aircraft is gaining altitude at 
The answer should me d if I’m not mistaken
Answer:
There are four main types of chromatography. These are Liquid Chromatography, Gas Chromatography, Thin-Layer Chromatography and Paper Chromatography. Liquid Chromatography is used in the world to test water samples to look for pollution in lakes and rivers.