Flag Algebra> Q.19 see image..............................
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Q.19 see image..........................................................

Harsh vijay , 5 Years ago
Grade 12
anser 1 Answers
Aditya Gupta

Last Activity: 5 Years ago

option is correct.
draw the figure, apply sine rule in ABD, pythagoras and elementary trigono in ACD, and finally cosine rule on angle ADB.
eliminate and find the final ans as 
2(c^2 – a^2)/3ca
kindly approve:)

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