Deducing Side Lengths via the Law of Cosines

Deducing Side Lengths via the Law of Cosines

Secondary 3

In the diagram, \(AB=2x\) cm, \(BC=3x\) cm and \(AC=4x\) cm.
Given that the area of \(\Delta ABC\) is \(12\sqrt{15}\) cm\({}^2\), calculate the value of \(x\).

Video Solution:

Video solution locked

A free account saves your progress; this video needs a course plan.

Create free account Sign in Get the E Math course · from S$29.98/mo

Solution:

Solution locked

680+ questions here come with free worked solutions. A free account saves your questions and progress; this one needs a course plan.

Create free account Sign in Get the E Math course · from S$29.98/mo E Math tuition

Create a free account to practise similar questions.

Create free account Sign in Get the E Math course · from S$29.98/mo E Math tuition

Answer:\(4\)

Need help? Join our E-Maths tuition for O-Level success.