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Mathematics, 19.01.2020 15:31 LearningZone

More calculus! (i'm so sorry)

1. given the curve that is described by the equation r = 3 cos ф, find the angle that the tangent line makes with the radius vector 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^2, b. 12 radians per second^2, c. 18 radians per second^2, d. 24 radians per second^2

to get brainliest you have to be able to give me at least some reasoning or proof for the answers so that i know you didn't just get them off of google and they're legit answers.

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Answers: 3

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More calculus! (i'm so sorry)

1. given the curve that is described by the equation r =...
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