Applied Mechanics and Graphic Statics
A weight ‘W’ is suspended at the free end of a light member hinged to a vertical wall. If the angle of inclination of the member with the upper wall is θ°, the force introduced in the member, is

W cosec θ
W sin θ
W cos θ
W sec θ

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Applied Mechanics and Graphic Statics
The following is not a law of static friction:

The force of friction always acts in a direction opposite to that in which the body tends to move
The force of friction depends upon the roughness of the surface
The force of friction is dependent upon the area of contact
The magnitude of the limiting friction bears a constant ratio to the normal reaction between two surfaces

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