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Mathematics, 03.01.2020 23:31, kenziepickup
1. given the curve that is described by the equation r = cos ф, find the angle that the tangent line makes when ф = 120°
a. 30° b. 45° c. 60° d. 90°
2. a line rotates in a horizontal plane according to the equation ф = 2t∧3 - 6t, where ф is the angular position of the rotating line, in radians, and t is the time in seconds. determine the angular acceleration when t = 2 sec.
a. 6 radians per second squared
b. 12 radians per second squared
c. 18 radians per second squared
d. 24 radians per second suared
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