Solve the problem.When the angle of elevation of the sun is ?, a tree casts a shadow. Which trigonometric function models the length of the tree's shadow?
A. cos ?
B. sin ?
C. cot ?
D. tan ?
Answer: C
Mathematics
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Use polar coordinates to find the limit of the function as (x, y) approaches (0, 0).f(x, y) = 
A. 1 B. ? C. 0 D. -1
Mathematics
Find a simplified expression for F(x) if F(x) = (f/g)(x).f(x) = 2x4 - 2x3 + 25x2 + 6x - 93, g(x) = x2 - 3
A. 2x2 - 2x + 31 B. 2x2 + 2x - 31 C. 2x2 + 2x + 31 D. 2x2 - 2x - 31
Mathematics
Find the mode or modes for the set of numbers.$90, $57, $32, $57, $29, $90
A. $57 B. No mode C. $90, $57 D. $90
Mathematics
Find the simple interest rate that corresponds to the simple discount rate for the given time. Round to the nearest hundredth of a percent.9%, 1 year
A. 9.89% B. 8.79% C. 9.79% D. 10.00%
Mathematics