angle of elevation

The angle of elevation from a point on level ground to the top of a 50-ft tree is 25°. How much closer to the tree does a point on the ground need to be for the measure of the angle of elevation to... more

08/30/15

Find the amount of each element in a compound

A sample of a new anti-malarial drug with a mass of 0.2394 g was made to undergo a series of reactions that changed all of the nitrogen in the compound into N2. This gas had a volume of 18.90 mL... more

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