INTRODUCTION TO THREE DIMENSIONAL GEOMETRY — MATHS STD 11 Science — Question
Gujarat BoardEnglish MediumSTD 11 ScienceMATHSINTRODUCTION TO THREE DIMENSIONAL GEOMETRY2 Marks
Question
Find the distance between the points P(1, –3, 4) and Q (– 4, 1, 2).
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Answer
The distance PQ between the points P (1,–3, 4) and Q (– 4, 1, 2) is $P Q=\sqrt{(-4-1)^{2}+(1+3)^{2}+(2-4)^{2}}$ [using distance formula] $=\sqrt{25+16+4}$ $=\sqrt{45}=3 \sqrt{5} $units
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