Law of Cosines (also called the Cosine Rule) says: c2 = a2 + b2 − 2ab cos(C ).
Law of Sines (or Sine Rule) is very useful for solving triangles: a sin A = b sin B = c … sine of angle B, and also equal to side c divided by the sine of angle C …
Sine cosine and area of triangleThe sine rule and cosine rule . The sine rule is used when we are given either a) two angles and one side, or b) two sides and a non-included angle. The cosine rule is used when we are given either a) three sides or b) two sides and the included Sine and cosine rule
Sine and Cosine Rule. Non right angle triangle can be done with the Law of Sine and Law of Cosine. Hence we apply this concept for non right-angle triangle. Also we apply for angle when three sides given. Sine and Cosine Rules.
the Sine Rule to find unknown sides and angles; Use the Cosine Rule to find unknown sides and angles. Sine and Cosine rule
