Possibly a loose pile of rocks? As it travels down a steep hill.
Answer:
use sin2A as 2sinAcosA and solve
The main reason many people stop working on farms in Mexico is: <span>Not enough farm work
The Climate in Mexico is not very suitable for farm works because it has dry lands that contain fewer minerals and there is very little water source to sustain the farms' living.
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that is known as : Volunteer Reinforcement
Since the house has a very limited man power to do some tasks that is very important for the Government, they often ask for Public's help to do it for them ( usually those who support the current Government officials)
ok, what is the question?