An airplane is flying at an altitude of 5000 ft above the ground. The pilot sights an object on the ground at an angle of depression of 28º. After some time, the plane descends to 3200 feet and the pilot sights the same object at an angle of depression of 47º. How far did the plane travel? Round to the nearest tenth.

Step-by-step explanattion:

the answer would be 1 1/72

step-by-step explanation:

you can rewrite the equation by separating the parts and then solving individually:

10-9=1

1/8 - 1/9=

find l c d and then combine:

1 1/72

large crystals result from very slow cooling.

evaporation of water: this would produce an evaporite which is a sedimentary rock. like a salt pan in a desert. not possible to have volcanic rocks originate this way.

crystalization in molten earth: slow cooling over time. (hundreds to millions of years)

crystalization at earth's surface: this results in fast cooling. (a few hours to a few months or years)

crystalization from cooling off hot water: that would be a hydrothermal deposit. while associated with volcanics they are not volcanic rocks themselves and usually occur fairly rapidly.