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Grade: 12
        
Q.19 see image..........................................................
3 months ago

Answers : (1)

Aditya Gupta
1670 Points
							
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:)
3 months ago
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