Math Problem Statement
त्रिभुज ABC की भुजा BC को D तक बढ़ा दिया जाता है उसमे यदि कोण ACD=112, कोण ABC= 3/4 कोण BAC तो कोण ABC= ?
A. 80 B.40 C 60 D 20
Solution
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Math Problem Analysis
Mathematical Concepts
Triangle Geometry
Exterior Angle Theorem
Angle Relations
Formulas
Exterior Angle Theorem: \( \angle ACD = \angle BAC + \angle ABC \)
Proportional Angle Relation: \( \angle ABC = \frac{3}{4} \angle BAC \)
Theorems
Exterior Angle Theorem
Suitable Grade Level
Grades 9-10
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