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20. Straight Lines
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Q21 of 169 Page 656

If A(1, 2), B(-3, 2) and C(3, 2) be the vertices of a ΔABC, show that

(i) tan A = 2


(ii)


(iii)


Points A,B,C lie on a same line, therefore the slope of each line is same and hence it does not form a triangle.


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If θ is the angle between the lines joining the points (0, 0) and B(2, 3), and the points C(2, -2) and D(3, 5), show that .

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Questions · 169
20. Straight Lines
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