Math Problem Statement

Segitiga ABC siku-siku di C. Ruas garis AC= 20 cm dan sudut ACD =30⁰. Panjang Ruas garis ET sama dengan

Solution

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Math Problem Analysis

Mathematical Concepts

Trigonometry
Right-angled Triangle
Angle Relationships

Formulas

Sinus (sin) θ = opposite / hypotenuse
Cosinus (cos) θ = adjacent / hypotenuse
Pythagoras Theorem: a² + b² = c²

Theorems

Pythagorean Theorem
Trigonometric Ratios

Suitable Grade Level

Grades 10-12