Use the appropriate identity to find the indicated function value. Rationalize the denominator, if applicable. If the given value is a decimal, round your answer to three decimal places.cos ?, given that sec ? = -7

A.
B.
C. - 
D. - 


Answer: C

Mathematics

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Use the formula for  to evaluate the expression.

A. 0 B. 5040 C. 70 D. 1

Mathematics

Evaluate the function for the indicated input and interpret the result.The table lists the number of persons voting in an election by election year and sex, for a small community. Let this table be a partial numerical representation of a function f, where   computes the number of persons who voted in the year x whose sex is y. Evaluate  Interpret the result.

A. f (1992, Male) - f (1992, Female) = 170 In the year 1992, 170 more men voted than women. B. f (1992, Male) - f (1992, Female) = -170 In the year 1992, 208 more women voted than had previously voted in 1988. C. f (1992, Male) - f (1992, Female) = 161 In the year 1992, 161 more men voted than women. D. f (1992, Male) - f (1992, Female) = 208 In the year 1992, 208 more men voted than women.

Mathematics

Solve the problem.A loan is made on August 5 and has a due date of April 10 during a non-leap year. Find the exact time of the loan.

A. 248 days B. 279 days C. 247 days D. 148 days

Mathematics

Find an equation for the hyperbola described.Vertices at (±3, 0); foci at (±9, 0)

A.  -  = 1
B.  -  = 1
C.   -  = 1
D.   -  = 1

Mathematics