Guys, learn Cosine rule in this post, a different topic. Introduction of trigonometry is already given to you along with some solved problems on them too.
Cosine Rule:- The trigonometric functions like the Cosine rule function is a function of an angle The Cosine rule is same as the Sin rule that hear we have discussed now. The Cosine Theorem, which itself apply exactingly to exact angle triangles. Therefore, Cosine rule allows us to work with any triangle. It is a bit more of an expression to remember than the Sine Law unfortunately, but it is extremely useful. Here is the equation for Cosine Theorem: c (squared) = a2+ b2-2abCosC. This topic is very vast, we will work on more on this in our coming post.
As cosine rule is important we have cumulative frequency also an interesting topic work on it.
