The Law of Cosines
The law of cosines relates all three sides of a triangle to one angle, and it works where the law of sines cannot: when you know three sides, or two sides and the angle between them. With a right angle it reduces to the Pythagorean theorem. The Law of Cosines, Example 2: (b=20, a=8, c=14) […]
8 Useful Tips on Learning Mathematics Effectively
Being able to apply algebraic arithmetic correctly, as well as knowing the basic geometric rules is necessary to pass exams well and enter a good college or university. Mathematics is needed to study many other subjects. For example, physics, economics, chemistry, and even biology. We also apply math almost everywhere and every day: In stores, […]
