I would trust the Source 1 i.e., the “Sworn testimony by American Sergeant in Congressional hearings in 1969” more because a sworn testimony is a gold evidence for the Congressional hearings. It won’t affect a person i.e., the Sergeant in any way. Maybe the testimony can get corrupted by lying, forcing and constraining, and the shaking the human memory. But in a speech by the General can affect his reputation as he can hid the truth and lie in his speech. So, the sworn testimony is more reliable than the speech.
The horizontal axis in the coordinate plane is called the x-axis. The vertical axis is called the y-axis. The point at which the two axes intersect is called the origin. The origin is at 0 on the x-axis and 0 on the y-axis.
