National 5; Using the sine and cosine rules to find a side or angle in a triangle The sine rule. The sine rule can be used to find an angle from 3 sides and an angle, or a side from 3 angles and a ...

We want the slope, but all we have is the angle. What we need is a relationship that relates the two. This relationship is known as the “tangent function,” written as tan(x).The tangent of an ...

Excel has built-in functions for sine and cosine, the two core trigonometric functions, ... Drag the fill handle down to cell C20 to display the sine of each angle on the spreadsheet.

Revise using the sine and cosine rules to find a side or angle in a triangle for your National 5 maths exam with Bitesize Scotland interactive practice quizzes covering feedback and common errors.