Help, giving 40 points andbr />
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10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

Someone me what is the area of this figure? 18m 18m 8m 16m

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle