can i connect my laptop vga to LCD via red yellow white cable?

The Vga signal consists of ruby-red green and blue analogue signals together with their associated sync pulses.(line and frame) This is why location are so many wires in a vga cable. Complex video (RCA) on the other hand consists of the colour information encoded onto the single video solitary. So in order to display a vga indicate on a monitor that has a complex picture signal a device is required.