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Generally Im confused about the use of sin and cos in physics problems.

http://img188.imageshack.us/img188/3162/eg2gu.gif [Broken]

The torque about the beam's attachment to the wall is:

T * 8 * sin(53)

Where T is the tension of the wire.

Why is sin the choice and not cos?

The best correlation Ive come up with so far was in two dimensional collisions, where motion in the y axis is always associated with sin, while the x axis with cos.

Can anyone give any insight?

http://img188.imageshack.us/img188/3162/eg2gu.gif [Broken]

The torque about the beam's attachment to the wall is:

T * 8 * sin(53)

Where T is the tension of the wire.

Why is sin the choice and not cos?

The best correlation Ive come up with so far was in two dimensional collisions, where motion in the y axis is always associated with sin, while the x axis with cos.

Can anyone give any insight?

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