Use the information given below to find cos (a -B). 1
3
tan a = with a in quadrant III
4'
4
cos B with ß in quadrant I
5'
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Give the exact answer, not a decimal approximation.
cos(a - b) = 0
.
ñ

What is the nth term rule of the linear sequence below? 27 , 25 , 23 , 21 , 19 , . .

What is not true about kl and mn? what is mn? (show your work)

Out of five men and five women, we form a committee consisting of four different people. assuming that each committee of size four is equally likely, find the probabilities of the following events: 1. the committee consists of two men and two women 2. the committee has more women than men. 3. the committee has at least one man. for the remainder of the problem assume that alice and bob are among the ten people being considered. 4. both alice and bob are members of the committee.