The numbers are fine, although the BP is a little on the low side - but no problem if it doesn't cause problems. The pulse is within the normal range of 50 - 100 (59 is excellent).
As to the fatigue, weakness, and angina pain, this too results from not drinking enough water. You also need to exercise more - walking is the best, as it invigorates the circulatory system.
At 77 you're probably not drinking enough water. This s because, after the age of 20 or so, the perception of thirst gradually diminishes until, by the time we start approaching our advanced years, we almost never notice it. And just because we don't feel thirsty doesn't mean that our bodies don't need water.
This is why the old school of thought that thirst is an accurate indicator to let us know when to drink water should never be followed. Water should be drunk on a scheduled basis whether we feel thirsty or not.