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CBSE Class 11-science Answered

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Asked by krishnapriya20 | 09 Mar, 2016, 08:07: AM
answered-by-expert Expert Answer
begin mathsize 12px style open parentheses straight a minus straight b close parentheses squared cos squared straight C over 2 plus open parentheses straight a plus straight b close parentheses squared sin squared straight C over 2 equals fraction numerator open parentheses straight a minus straight b close parentheses squared open parentheses 2 cos squared straight C over 2 close parentheses plus open parentheses straight a plus straight b close parentheses squared open parentheses 2 sin squared straight C over 2 close parentheses over denominator 2 end fraction equals fraction numerator open parentheses straight a minus straight b close parentheses squared open parentheses 1 plus cosC close parentheses plus open parentheses straight a plus straight b close parentheses squared open parentheses 1 minus cosC close parentheses over denominator 2 end fraction equals fraction numerator open parentheses straight a minus straight b close parentheses squared open parentheses 1 plus begin display style fraction numerator straight a squared plus straight b squared minus straight c squared over denominator 2 ab end fraction end style close parentheses plus open parentheses straight a plus straight b close parentheses squared open parentheses 1 minus fraction numerator straight a squared plus straight b squared minus straight c squared over denominator 2 a b end fraction close parentheses over denominator 2 end fraction equals fraction numerator open parentheses straight a minus straight b close parentheses squared open square brackets open parentheses straight a plus straight b close parentheses squared minus straight c squared close square brackets plus open parentheses straight a plus straight b close parentheses squared open square brackets straight c squared minus open parentheses straight a minus straight b close parentheses squared close square brackets over denominator 2.2 ab end fraction equals fraction numerator straight c squared open square brackets open parentheses straight a plus straight b close parentheses squared minus open parentheses straight a minus straight b close parentheses squared close square brackets over denominator 4 ab end fraction equals fraction numerator straight c squared cross times 4 ab over denominator 4 ab end fraction equals straight c squared Please space check space the space question. space It space should space be space apostrophe straight c squared apostrophe space on space the space right space hand space side. end style
Answered by satyajit samal | 10 Mar, 2016, 12:12: PM
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CBSE 11-science - Maths
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 11-science - Maths
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 11-science - Maths
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CBSE 11-science - Maths
A n space a i r c r a f t space t r a c k i n g space s t a t i o n space d e t e r m i n e s space t h e space d i s tan c e space f r o m space a space c o m m o n space p o i n t space O t o space e a c h space a i r c r a f t space a n d space t h e space a n g l e space b e t w e e n space t h e space a i r c r a f t s. I f space a n g l e space O space b e t w e e n space t h e space t w o space a i r c r a f t s space i s space 49 to the power of 0 a n d space t h e space d i s tan c e space f r o m space p o i n t space O space t o space t h e space t w o space a i r c r a f t s space a r e space 50 k m space a n d space 72 k m comma f i n d space t h e space d i s tan c e space b e t w e e n space t h e space t w o space a i r c r a f t s ?
Asked by Topperlearning User | 31 Aug, 2016, 10:16: PM
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CBSE 11-science - Maths
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 11-science - Maths
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 11-science - Maths
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 11-science - Maths
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 11-science - Maths
Asked by Topperlearning User | 31 Aug, 2016, 10:40: PM
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