1. 31. EOY Revision Starts - Trigonometry RatiosThis week, we covered Trigonometry Ratio. We learnt that from the ASTC diagram, we can find positive/negative trigonometry ratio depending on the quadrant(s). Considering special triangles, we see that some ratios can be expressed in exact surd forms. We also discovered there are more trigonometry functions – secant, cosecant, and cotangent.