Answer:

Explanation:
Angle of depression = 
b = Height of building = 42 feet

p = Distance from the car to the base of the building
From the trigonometric identities we get

The distance from the car to the base of the building is
.
Small antennas on the spacecraft can beam weak radio signals back to earth meaning it can in some way communicate
Reduce use of fossil fuels in factories and other places as a source of energy and attempt to replace the use of fossil fuels with cleaner sources of energy like "Wind energy" and "Solar energy"
Answer:
1.b
2.a
3.c
i have to have 20 characters so heres some extra stuff lol
Answer: Scientists know that the Colorado River carved Grand Canyon. ... The age of the river falls between the rocks determined to be older than the river and those determined to be younger. Through this method, scientists have estimated an age for the river, and thus the canyon through which it flows, of 5-6 million years.
Explanation: