Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.cos ? = - , ? < ? < Find cos .

A.
B.
C. - 
D. - 


Answer: C

Mathematics

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Solve.The ratio of the length to the width of a rectangular plot is 7 to 4. Its diagonal measures  Find the dimensions of the plot.

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Identify the expression as a polynomial or not a polynomial.4x - 14

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