Broad objective of this article is to Discuss on Law of Sines. Here explain Law of Sines with examples. You can use the Law of Cosines discussed within the last section to solve standard triangles, but only within certain conditions. The formulas which is to be developed in this part provide more flexibility within solving these general triangles. Law of Sines is appropriate for obtuse triangles as well as acute and right triangles, considering that the value of the sine is positive in both first and second quadrant—that will be, for angles less as compared to 180°.