Trigonometry Missing Sides
This article explores the topic trigonometry missing sides. The objectives for this section are being able to use the sine, cosine and the tangent formulae to find the missing sides in a triangle. You...
Category: Trigonometry
Double Angle Formulae
In this chapter we shall be looking at the double angle formulae. We shall explore the double angle formulae for sin2A, cos2A and tan2A and then use them to solve equations and simplify expressions...
R-Alpha Method
In this article we shall be exploring the R-alpha method. We shall explore how to use expressions such as Rcos(x+α) and Rsin(x-α) in connection with acosx ± bsinx. Furthermore we shall explore how to...
Cosine Rule
In this chapter we shall be exploring the cosine rule. In trigonometry we can use the cosine rule to find the missing sides and angles in a triangle. You must have some basic knowledge...