Question
Download Solution PDFArea of the triangle having the coordinates (4, 2), (-1, 2) and (3, a) is 10 sq. units. Find the value of 'a'.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Area of a triangle with points (x1, y1), (x2, y2) and (x3, y3) =
Calculation
Given area of triangle = 10 sq. units
⇒
R1 = R1 - R2
⇒
⇒ |5 (2 - a) - 0 + 0| = 20
⇒ |2 - a| = 4
⇒ a = -2 or 6
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