Find the exact function value.sec 30°

A.
B.
C.
D. 1

Answer: B

Mathematics

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A. 2
B. 4
C. 4
D. 2

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Use identities to find the exact value of the expression.sin2 70° + cos2 70°

A. 0.49 B. 1 C. 0 D. 0.70

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Determine the vertex of the graph of f.f(x) = x2 - 4

A. (4, 0) B. (0, 4) C. (-4, 0) D. (0, -4)

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Express the given function H as a composition of two functions f and g such that H(x) = (f ? g)(x).H(x) = 

A. f(x) = , g(x) = 
B. f(x) = , g(x) = x2
C. f(x) = , g(x) = 87x2 + 99
D. f(x) = 87x2 + 99, g(x) = 

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Mathematics