According to the public health director, Helga Freitas, the new cases are all from Luanda and are aged between 19 and 89, 17 female and 34 male.
With the three deaths, Angola has increased the number of deaths from the disease to 62, with three yet to recover.
Among the 827 active cases, four are in critical condition and 19 in serious condition, said Helga Freitas.
In total, 1395 infections have been diagnosed in Angola since the beginning of the pandemic.
A total of 359 samples were processed by the RT-PCR molecular biology test, of which 51 tested positive, with a cumulative total of 27,106.
163 rapid serological tests were also performed with 13 reactives, indicating that 8 out of every 100 screened were exposed to the virus.
The covid-19 pandemic has already caused more than 701,000 deaths and infected more than 18.5 million people in 196 countries and territories, according to a balance sheet made by the French agency AFP.
The disease is transmitted by a new coronavirus detected at the end of December in Wuhan, a city in central China.
In Africa, there are 21,050 confirmed deaths in more than 976,000 people infected in 55 countries, according to the latest pandemic statistics from that continent.