The point P on the unit circle that corresponds to a real number t is given. Find the indicated trigonometric function.
?Find cot t.
A. 
B. 
C. - 
D. - 
Answer: C
Mathematics
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Solve the problem.The numbers on the right in the equations below are the hexagonal numbers. Use the sequence of equations to find a formula for hn, the nth hexagonal number. 1 = 1 1 + 5 = 6 1 + 5 + 9 = 15 1 + 5 + 9 + 13 = 28 ..............
A. hn = (n - 1)(2n + 1) B. hn = 2n(n - 1) C. hn = n(2n - 1) D. hn = n(2n + 1)
Mathematics
Simplify. Assume that each variable is nonnegative.
A. 
B. 29
C. 
D. 4x
Mathematics
Factor the polynomial.4y2 + 16y + 25
A. (2y + 5)(2y - 5) B. (2y + 5)2 C. (2y - 5)2 D. Does not factor
Mathematics
Evaluate 
.
A. 40,320
B. 362,880
C. 
D. 9
E. none of these
Mathematics