
A = 47900
i = 5% = .05
n = number of compounding periods in a year (1,2,12,365)
t = number of years = 5
I wrote that wrong, sorry.
It should be acute because if A and B are complementary then B and A added together should be 90 so 90-30=60 and 60 would be an acute angle
Peyton's mistake was in Step 3, so the correct answer is C.
They added an extra negative sign when it wasn't needed.
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