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ICSE Class 10 Answered

Please help. QA ,B and C
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Asked by Sanjeev | 22 Feb, 2018, 05:26: PM
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begin mathsize 16px style straight Q 1 open space the space brackets space open parentheses straight a plus straight b close parentheses squared use space identity space sin squared straight x plus cos squared straight x equals 1 straight Q 2 find space slope space of space the space line space having space 2 space points the space midpoint space of space two space points the space slope space of space bisector space will space be space negative space inverse space of space slope space of space line and space mid space point space will space lie space on space bisector space so space by space slope space point space form space you space will space get space the space ans straight Q 3 fraction numerator straight x cubed plus 12 straight x over denominator 6 straight x squared plus 8 end fraction equals fraction numerator straight y cubed plus 27 straight y over denominator 9 straight y squared plus 27 end fraction b y space c o m p o n e n d o space a n d space d i v i d e n d o fraction numerator straight x cubed plus 12 straight x plus 6 straight x squared plus 8 over denominator straight x cubed plus 12 straight x minus 6 straight x squared minus 8 end fraction equals fraction numerator straight y cubed plus 27 straight y plus 9 straight y squared plus 27 over denominator straight y cubed plus 27 straight y minus 9 straight y squared minus 27 end fraction open parentheses x plus 2 close parentheses cubed over open parentheses x minus 2 close parentheses cubed equals open parentheses y plus 3 close parentheses cubed over open parentheses y minus 3 close parentheses cubed fraction numerator open parentheses x plus 2 close parentheses over denominator open parentheses x minus 2 close parentheses end fraction equals fraction numerator open parentheses y plus 3 close parentheses over denominator open parentheses y minus 3 close parentheses end fraction a g a i n space C space a n d space D x over 2 equals y over 3 x colon y equals 2 colon 3 end style
Answered by Arun | 22 Feb, 2018, 05:43: PM

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