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Mathematics: Post your doubts here!

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I don't understand how you guys get 20.... and GSL what's B/2 :s
u understood how u got 10?
da question says dat the line BD bisects angle B... dats y when u know <CBD u can double it to give 20
he means half of angle B :)
 
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u understood how u got 10?
da question says dat the line BD bisects angle B... dats y when u know <CBD u can double it to give 20
he means half of angle B :)
Well i alredy knew how to take out the 10 and now I just checked what exactly bisect means :oops: and came to know like dividing into two equal parts so now i can try to do it on my own :D
 
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In quadrilateral ABCD, AB produced is perpendicular to DC produced. If <A = 44 and <C = 148, calculate <D and <B!
 
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