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Grade 12Trigonometry

question no 38...............please help ….reply soon thank you

Question image for question no 38...............please help ….reply
Profile image of milind
10 Years agoGrade 12
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1 Answer

Profile image of mycroft holmes
ApprovedApproved Tutor Answer10 Years ago
Let AD = d, and AE = e
Since Ar(BAE) = 2 Ar(EAC), we have ½ ce sin(x+y) = eb sin z so that sin(x+y)/sin z = 2 b/c.........1
 
Similarly comparing Ar(DAC) and Ar(BAD), we get sin(y+z)/sin x = 2c/b...........2
 
Multiplying (1) and (2), we get that the desired expression equals 4

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