The equation for torque is given by

`tau=rFsintheta`

where `tau` is the torque, r is the length of the arm of the lever (in this case a wrench), F is the force applied and `theta` is the angle between the direction of the force and the lever.

** Thus, in this...**

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The equation for torque is given by

`tau=rFsintheta`

where `tau` is the torque, r is the length of the arm of the lever (in this case a wrench), F is the force applied and `theta` is the angle between the direction of the force and the lever.

**Thus, in this situation**

`F=tau/(rsintheta)=12/(0.4xxsin(60^@))=12/(0.4xx(sqrt(3)/2))~~34.64N`

**Further Reading**