An equation in which the variable(s) can take any value and it is still true.
ex.
cos(x) = cos(-x)
sin(x) = -sin(-x)
The above equations are true for any real value of x. Identities are sometimes written with a "triple equals sign", as in 3 parallel lines rather than 2.
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they are the simple rules in algebra which make calculations a lot easier
In trigonometry, identities are mathematical expressions that are true for all values of the variables involved. Some common trigonometric identities include the Pythagorean identities, the reciprocal identities, the quotient identities, and the double angle identities. These identities are used to simplify trigonometric expressions and solve trigonometric equations.
foundations algebra is probably pre algebra, which is before algebra, so no.
algebra 1a is the first part of algebra 1 and algebra 1b is the second part. :)
That is called "algebra".That is called "algebra".That is called "algebra".That is called "algebra".