Law of Sines:

= side of triangle ABC divide by the sine of angle opposite side

Law of Cosines:

For a triangle ABC to find , b and c we use the formula .

For a triangle ABC to find , a and c then we use the formula .

For a triangle ABC to find , a and b then we use the formula . 

This tutorial deals with the laws of sines and cosines and their applications. A more accurate approximation of solutions can be performed by using the law of sines and cosines. Scenarios are given where some angles or sides of a triangle are not known so the law of sines and cosines are used in examples.

Scenarios are given where some angles or sides of a triangle are not known so the law of sines and cosines are used in examples. Other scenarios of where a more detailed solving process are performed in the example problems Acronyms are giving for the different cases of the law of sines and the various cases of the law of cosines.

Specific Tutorial Features:
• Diagrams showing ASA, SSS and AAA sine and cosines scenarios are mentioned in this tutorial.
• Illustrations showing all aspects of the law of sines and cosines.

Series Features:
• Concept map showing inter-connections of new concepts in this tutorial and those previously introduced.
• Definition slides introduce terms as they are needed.
• Visual representation of concepts
• Animated examples—worked out step by step
• A concise summary is given at the conclusion of the tutorial.