S2 – Area: compound shapes – Rectangle And Semi-Circle
Watch how to calculate the combined area of a semi-circle which is attached to the end of a rectangle.
SOH CAH TOA
SOH CAH TOA is used to remember the trigonometry ratios; sine = opposite over hypotenuse, cosine = adjacent over hypotenuse, tangent = opposite over adjacent. This helps you work out unknown side lengths or unknown angles in a right-angled triangle. This video is a tutorial on how to apply this rule.