Math Problem Statement
chứng minh tana + cota = 1/(sina*cosa)
Solution
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Math Problem Analysis
Mathematical Concepts
Trigonometry
Trigonometric Identities
Formulas
tan(a) = sin(a) / cos(a)
cot(a) = cos(a) / sin(a)
sin^2(a) + cos^2(a) = 1
Theorems
Pythagorean Identity
Suitable Grade Level
Grades 10-12
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