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CBSE Class 11-science Answered

The question is attached. Please send the step by step and complete solution of the above problem.
Asked by sudhanshubhushanroy | 29 Nov, 2017, 07:09: AM
answered-by-expert Expert Answer
begin mathsize 16px style All space chords space of space straight a space given space length space in space straight a space given space circle space subtend space the space same space arc space
and space therefore space the space same space central space angle. space
Thus comma space by space the space given comma space we space can space re minus arrange space our space chords space into space straight a space triangle space with space
the space circle space as space its space circumcircle.
The space increment BCD space space has space semiperimeter space fraction numerator 2 plus 3 plus 4 over denominator 2 end fraction
so space by space Heron apostrophe straight s space formula space it space has space area space
equals space square root of 9 over 2 5 over 2 3 over 2 1 half end root
equals space 3 over 4 square root of 15
The space area space of space straight a space given space triangle space with space sides space of space length space straight a comma space straight b comma space straight c space
and space circumradius space of space length space straight R space is space also space given space by space the space formula space
equals space fraction numerator abc over denominator 4 straight R end fraction space equals fraction numerator 2 cross times 3 cross times 4 over denominator 4 straight R end fraction
fraction numerator 2 cross times 3 cross times 4 over denominator 4 straight R end fraction equals 3 over 4 square root of 15 space
straight R space equals space fraction numerator 8 over denominator square root of 15 end fraction. space space
Now comma space consider space the space triangle space increment ABC. space
This space isosceles space triangle space has space vertex space angle space space straight alpha
so space by space the space Law space of space Cosines comma space space
cos space straight alpha space equals fraction numerator straight R squared plus straight R squared minus 2 squared over denominator 2 cross times straight R cross times straight R end fraction equals 17 over 32 end style
Answered by Arun | 30 Nov, 2017, 12:00: PM
CBSE 11-science - Maths
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
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
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by Topperlearning User | 31 Aug, 2016, 10:29: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by Topperlearning User | 31 Aug, 2016, 10:40: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
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