Use (5.4) to show that (a) ( - n)r + n) = (-1)", if n = a positive integer; (b) ()! = 2/ sin 72, where z is not necessarily an integer; see comment after equation (3.3).

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Trish receives $450 on the first of each month. josh receives $450 on the last day of each month. both trish and josh will receive payments for next four years. at a discount rate of 9.5 percent, what is the difference in the present value of these two sets of payments?

M. xyz =radians. covert this radian measure to its equivalent measure in degrees.