A body is placed on a rough inclined pla...

A body is placed on a rough inclined plane of inclination `theta`. As the angle `theta` is the increased from `0^(@)` to `90^(@)`, the normal force between the block and the plane is,

`F+mg tan theta`

`F cos theta-mg sin theta`

`F sin theta-mg cos theta`

`F sin theta+mg cos theta`

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