zb9882
zb9882
28-08-2020
Mathematics
contestada
Please help! This is for geometry
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chocolatee24
chocolatee24
28-08-2020
ACB=90*
ACD=60*
so, DCB=30*
again, CBD= 90*
Now, in triangle CBD,
Tan 60 = CD/BD
Or, (root)3 = CD/5
Or, CD= 5(root)3
Now,
In triangle ACD
Tan. 60 = AD/CD
Or, (Root)3 = (5(root)3/AD)
Or, 5/AD = 1 ( root 3 and root 3 gets cancelled)
so, AD = 5
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