Answer:
the torque necessary to loosen the bolt when at a right angle was:
t = 60N x 0.3 = 18 Nm
To achieve the equivalent torque applied at a 30-degree angle:
18 Nm = Force x 0.3cos(30 degrees)
Simplifying yields:
18 Nm = Force x 0.2598
Thus, Force = 18Nm / 0.2598
this results in Force = 69.28 N
Adjust the answer as necessary.