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3 days ago · In trigonometry, trigonometric identities are equalities that involve trigonometric functions and are true for every value of the occurring variables for which both sides of the equality are defined. Geometrically, these are identities involving certain functions of one or more angles.
- Trigonometric Functions
Basis of trigonometry: if two right triangles have equal...
- Law of Cosines
Use in solving triangles Fig. 3 – Applications of the law of...
- Chebyshev Polynomial
and U n (x) are orthogonal with respect to another,...
- Trigonometric Functions
5 days ago · An algebraic identity is an equality that holds for any values of its variables. For example, the identity \[(x+y)^2 = x^2 + 2xy + y^2\] holds for all values of \(x\) and \(y\). Since an identity holds for all values of its variables, it is possible to substitute instances of one side of the equality with the other side of the equality.
2 days ago · v. t. e. In mathematics, a function from a set X to a set Y assigns to each element of X one element of Y. [1] The set X is called the domain of the function [2] and the set Y is called the codomain of the function. [3] Functions were originally the idealization of how a varying quantity depends on another quantity.
2 days ago · Circling these elements creates a "hockey stick" shape: 1+3+6+10=20. 1+ 3+6+ 10 = 20. The hockey stick identity is a special case of Vandermonde's identity. It is useful when a problem requires you to count the number of ways to select the same number of objects from different-sized groups.
1 day ago · A tiling with squares whose side lengths are successive Fibonacci numbers: 1, 1, 2, 3, 5, 8, 13 and 21. In mathematics, the Fibonacci sequence is a sequence in which each number is the sum of the two preceding ones. Numbers that are part of the Fibonacci sequence are known as Fibonacci numbers, commonly denoted Fn .
21 hours ago · The domestic cat has a smaller skull and shorter bones than the European wildcat. [47] It averages about 46 cm (18 in) in head-to-body length and 23–25 cm (9.1–9.8 in) in height, with about 30 cm (12 in) long tails. Males are larger than females. [48] Adult domestic cats typically weigh 4–5 kg (8.8–11.0 lb).
4 days ago · Interactive Maps and Charts by MBFC. Below is a list of our political maps and charts. We plan to continuously add new interactive visual maps and charts harnessing our comprehensive data.
