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Mathematics, 01.11.2019 06:31 SmokeyRN

The following triangle abc is rotated clockwise about the origin the new coordinates are a'(1,-2) b'(4,6) and c'(-2,3). which of the following is measured of the angle of rotation?
original angles a(2,1) b(-6,4) c(-3,-2)

a. 45 degrees

b. 90 degrees

c. 180 degrees

d. 270 degrees

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