How do i view the picture i want to take through both the viewfinder and the monitor?

First, even though you posted this in a film camera area, I'm going to assume you have a digital camera since film cameras generally do not have monitors.
Without knowing the model of your camera, I can't give you an exact answer, but in general most cameras that provide both an electronic viewfinder and a monitor will only show the image on one or the other, not both at the same time. Using only one at a time cuts down on power consumption and adds battery life. When you're peering through the viewfinder, you don't need the distraction of the monitor flickering by your cheek. When you have the camera at a distance so you can see the monitor, you can't see the viewfinder anyway.
Many cameras have a sensor that detects whether you're close to the camera. If so, it assumes you have the camera to your face and switches to the viewfinder. If not, it switches to the monitor.
Some cameras force you to switch between them.
Once again, without knowing the make and model of your camera, I can't be any more specific. Your camera manual will tell you how your camera works.
If you need any more assistance, please feel free to reply to this post, but be sure to specify the make and model of your camera.

Dear Mountainv444,

If you can tell me the make and model of your camera I can definitely answer this, but you may be able to find the solution in simpler terms by going to the support section on the manufacturers website.

I hope that this is the fixya for you and look forward to hearing from you soon.

Yours sincerely

Ouszen