Topic: complement list of topics
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9 items are filed under this topic.

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	Probability		2012-03-14
		From tom: Let A and B be events with p(A ∪ B)= 7/8, p(A ∩ B)= 1/4, p(A' )= 5/8 Find: a. p(A) b. p(B) c. P(A ∩ B') ...problem for me is that if p(A') = 5/8 then P(A) should be 1/4...so that the p(A' ∪ A) = p(A ∪ B) = 7/8...however, the book says the answer for p(A) is 3/8...does that mean, my interpretation is wrong (because if it is, then all my answers would be crap)...or is it just another typographical error? Answered by Penny Nom.
	Two angles are supplementary		2009-01-08
		From Stephanie: two angles are supplementary, one of the angles is 30 degrees more than double the other angle. find the first angle, the second angle the complement of the given angle. Answered by Robert Dawson.
	The complement of an angle		2007-09-16
		From tom: The measure of the complement is 12 more than twice the original angle. Find the measure of the angles. Answered by Stephen La Rocque.
	Complements and supplements		2007-08-31
		From Gretchen: An angle is its own complement. Find the measure of a suppllement to this angle. Answered by Stephen La Rocque.
	Complementary and supplementary angles		2007-04-26
		From Tracey: I have looked at your answers for students asking if groups of more than two angles can be considered either complementary or supplementary. Your answer is basically "no" because of historic definition. However, I present to you the following case to consider: Segments AB, CD and EF intersect at point G creating 6 angles numbered 1-6 in a clockwise manner. If Angle 1=25 degrees, and angle 2 = 106 degrees, would the only way to calculate the measures of angles 3 and 6 not be to consider the definition of supplementary angles? And, if one was to be doing a proof of this, would not the reason be "definition of supplementary angles"? This, then, creates a group of 3 angles that are supplementary. Help me correct my logic if it is flawed. Answered by Penny Nom.
	What are adjacent angles that equal 360 called?		2000-11-22
		From David: I know that supplementary angles add to 180 degrees and that commplementary angles add up to be 90 degrees, but what are adjacent angles that equal 360 degrees called? Answered by Chris Fisher.
	Supplementary angles		2000-05-09
		From Suzanne: We know that: Supplementary angles are two angles whose sum equals 180 degrees and complementary angles are two angles whose sum equals 90 degrees. Are supplementary and complementary angles necessarily adjacent? or can they be non-adjacent? Answered by Chris Fisher.
	Three keys		1998-11-26
		From Karen Chan: A man has a bunch of three keys, only one of which fits the lock of his front door. When he comes home in the dark he tries the keys at random until he finds the one fits. Find the probability that in a week of five nights, he tries the right key first on at least one night. Answered by Penny Nom.
	Complementary and Supplementary Angles		1998-10-21
		From Christina Saunders: I am in 9th grade and my math teacher wanted us to find out why complimentary angles are called complimentary and why supplimentary angles are called supplimentary. I have looked everywhere and asked numerous people, but I have yet to find an answer. My math teacher said it had something to do with trigonometry. Do you have an answer for me? Answered by Chris Fisher and Penny Nom.

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