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CBSE Class 10 Answered

P and Q have coordinats (-1,2) and (6,3) respectively. reflect P in the x axis to P' find the length of segment P'Q
Asked by vans75a | 25 Jan, 2016, 07:02: PM
answered-by-expert Expert Answer

W h e n space y o u space r e f l e c t space a space p o i n t space a c r o s s space X minus a x i s comma space o n l y space Y space c o o r d i n a t e space c h a n g e s space si g n. H e n c e space P apostrophe identical to open parentheses negative 1 comma space minus 2 close parentheses N o w space u sin g space d i s tan c e space f o r m u l a space P apostrophe Q equals square root of open parentheses 6 minus open parentheses negative 1 close parentheses close parentheses squared plus open parentheses 3 minus open parentheses negative 2 close parentheses close parentheses squared end root equals square root of 7 squared plus 5 squared end root equals square root of 74

Answered by | 25 Jan, 2016, 07:06: PM

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