A boulder of weight "w" rests on a hillside that rises at a constant angle "a" above the horizontal. The boulder's weight is a force on the boulder that has a direction vertically downward.
In terms of "w" and "a", what is the component of the weight of the boulder in the direction parallel to the surface of the hill?
What is the component of the weight in the direction perpendicular to the surface of the hill?
The Attempt at a Solution
i have no idea...
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