Math Problem Statement
已知tan2a=3, 且a∈(-π/2, 0), 利用弦化切的方法求(3sina+cosa)/[6sina+(2√10)cosa]的值.
Solution
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Math Problem Analysis
Mathematical Concepts
Trigonometry
Double Angle Formulas
Chord and Tangent Formula
Formulas
Double angle formulas
Chord and tangent formula
Theorems
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Suitable Grade Level
Advanced High School
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