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Articles/Submissions for formulae
Trigonometry and properties of triangles
--> Bounds |sin(x)| <= 1, |cos(x)| <= 1, |sec(x)| >= 1, |csc(x)| >= 1. Identities sec(x) = 1/cos(x), csc(x) = 1/sin(x), cot(x) = 1/tan(x), tan(x) = sin(x)/cos(x), cot(x) = cos(x)/sin(x). sin(-x) = -sin(x), cos(-x) = cos(x), tan(-x) = -tan(x), cot(-x) = -cot(x), sec(-x) = sec(x), csc(-x) = -csc(x). sin(/2-x) = cos(x), cos(/2-x) = sin(x), tan(2-x) = cot(x), cot(/2-x) = tan(x), sec(/2-x) = csc(x), csc(/2-x) = sec(x). sin(/2+x) = cos(x), cos(/2+x) = -sin(x), tan(/2+x) = -cot(x), cot(/2+x) = -tan(x), sec(/2+x) = -csc(x), csc(/2+x) = sec(x). sin(-x) = sin(x), cos(-x) = -cos(x), tan(-x) = -tan(
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submitted by apurviitjee2008 1399 m
maths formulae
for quick revision of formulae refer this formula databasehttp://library.thinkquest.org/20991/gather/formula/index.html
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submitted by antony 55 m
