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Hmm, well construction is positive in that it can provide structures that help the world... housing, factories, animal shelters, cruise ships, etc. On the other hand, it can be negative as far as environmental impact or changing land use... taking away the habitat of a rare bird or animal for instance, or displacing a population or a site important to history in favor of "progress." There are good and bad things about all decisions, and the individual cases have to be looked at.
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Why are cosines positive and negative?
Because the cosine of some angles is positive and the cosine of some other angles is negative.
How do you know positive and negative terminals?
Look for a + by the positive terminal and a - by the negative terminal, or red for positive, black for negative. Some batteries have the positive terminal protruding and the negative terminal flat. Or you can get a meter that will tell you which is which,
What is the sign of irrational number?
Some are positive and some are negative.
What are some positive and negative aspects of joining the military?
Positive - you look great in uniform Negative - you may die in battle.
What if you add a negative to a positive?
If you add a positive and a negative number, the result can be positive, negative, or zero - depending on which of the numbers has the greater absolute value. Here are some examples: 4 + (-4) = 0 (zero) 4 + (-6) = -2 (negative) 4 + (-2) = 2 (positive)
