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The robot moves the particle A (mass M) in the vertical plane using polar coordinate formulas

r (t) = 1.2-0.6sin (2πt) [m]

θ (t) = 0.5-1.5cos (2πt) [rad]

in accordance with

Determine the angular position θ of the arm at time t0 = 1.9 s

Use radians in the calculations, but GIVE ANSWER TO THIS QUESTION IN DEGREES !!

GIVE ANSWER TO THREE DECIMALS

90
120
60
15
150
30
r(t)
180
r(x)
210
330
240
300
270
A(t), 4(x)

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