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SubjectsMathematics
सारणिकों द्वारा त्रिभुज का क्षेत्रफल
In this Class 12 Mathematics topic from the chapter Determinants, students learn how to find the area of a triangle when the coordinates of its three vertices are given. They use a 3×3 determinant, apply the area formula, and take the absolute value to obtain a positive result. The topic also helps students understand that a zero determinant indicates collinear points, so no triangle is formed, while reinforcing determinant expansion, coordinate substitution, and clear step-by-step algebraic calculation.
TOPIC PRACTICE
Up to 1 questions from this page. Select your focus, then start.
The inequality x < 2 includes every real number smaller than 2, such as 1, 0, and -5, but it does not include 2 itself. Therefore, the interval is written as (-∞, 2). The round parenthesis at 2 shows that the endpoint is excluded, while infinity always uses a parenthesis because infinity is not an actual real number.
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