Use identities to find the exact value of the indicated trigonometric function of the acute angle ?.sin ? = 
, cos ? = 
Find sec ?.
A. 
B. 
C. 3
D. 2
Answer: C
Mathematics
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Find the indicated sum. Find the sum of the first 7 terms in the geometric series 3 + 9 + 27 + . . .
A. 3279 B. 1092 C. 9840 D. 1122
Mathematics
Evaluate the polynomial.-xyz for x = 1, y = -1, and z = 2
A. 1 B. 16 C. -2 D. 2
Mathematics
Determine whether the given sequence is arithmetic, geometric, or neither. If the sequence is arithmetic, find the common difference; if it is geometric, find the common ratio.9, 11, 14,18, ...
A. Arithmetic; d = 9 B. Geometric; r = 81 C. Geometric; r = 9 D. Neither
Mathematics
For the given functions f and g, find the requested composite function.f(x) = -4x + 5, g(x) = 6x + 3;
Find (g ? f)(x).
A. -24x + 33 B. -24x - 27 C. -24x + 17 D. 24x + 33
Mathematics