Question
Download Solution PDFWhat is the area of the triangle ABC with sides a = 10cm and c = 4cm angle B = 30°?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Area of a triangle = \(1\over 2\) × base × altitude
Area of ΔABC = \(\rm {1\over2} (a \cdot b\cdot sin \ C)\)
Calculation:
Area of a triangle = \(1\over 2\) × base × altitude
= \(1\over 2\) × c × a sin∠CBA
= \(1\over 2\) × 10 cm × 4cm sin 30°
= 5 × 4 × \(1\over 2\) (as sin 30° = \(1\over 2\))
= 10 cm2
Last updated on May 30, 2025
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