Learn how to solve for the lengths of the sides and the measures of the angles of a triangle using the law of cosines. The ...

👉 Learn how to solve trigonometric equations by factoring out the GCF. When solving trigonometric equations involving the ...

Being able to identify which formula to use, sine or cosine, and when, is necessary to answer questions on this topic successfully. Check you are confident in how to use the sine and cosine rules.