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Q5 pls 

Asked by Tanishq 28th October 2017, 10:26 AM
Answered by Expert
begin mathsize 16px style Area space of space increment CAB space equals space area space of space increment CAD space plus space area space of space increment CDB
1 half basinC space equals space 1 half straight b cross times CD space sin straight C over 2 plus 1 half straight a cross times CDsin straight C over 2
CD space equals space fraction numerator 2 ab over denominator straight a plus straight b end fraction cos straight C over 2
Applying space sin space rule space in space increment CAD
CD over sinA equals fraction numerator straight b over denominator sin space angle CDA end fraction
CD equals fraction numerator straight b sinA over denominator sin open parentheses straight B plus begin display style straight C over 2 end style close parentheses end fraction end style
Answered by Expert 13th December 2017, 6:08 PM
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