Tan, 60, a company director, survived 53 gruelling days in the intensive care unit (ICU) after he was diagnosed with Covid-19.

What matters is that he’s back,” said Tan, 60, in a phone interview yesterday. Tan’s ordeal began last September when her son, Goh Beng Shong, 21, announced that his boss was taking him on a ...

The adjacent side (\(a\)) is next to the angle in question (\(x\)). The trigonometric ratios for the angles 30°, 45° and 60° can be calculated using two special triangles. An equilateral ...