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An equilateral triangle 90.0 m on a side has a m1 = 35.00 kg mass at...

An equilateral triangle 90.0 m on a side has a m1 = 35.00 kg mass at one corner, a m2 = 95.00 kg mass at another corner, and a m3 = 145.00 kg mass at the third corner. Find the magnitude and direction of the net force acting on the 35.00 kg mass.
6.012e-11 N
_____ ° counterclockwise from the positive x-axis

Take positive x-axis to the right.

I got part a right, need help with part b (counterclockwise part)

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