Find the exact value of the expression in degrees without using a calculator or table.sec-1 

A. 315°
B. 120°
C. 45°
D. 135°

Answer: D

Mathematics

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A. 153 B. 164 C. 154 D. 143

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Solve the problem.The result of applying 12 consecutive 90° clockwise rotations with the same center is

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Graph the ellipse and locate the foci. +  = 1

A. foci at (, 0) and (-, 0)

B. foci at (0, 2) and (0, -2)

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