can anyone find this answer
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2
Answer:
AB = 4cm
Step-by-step explanation:
In triangle BCD....
DC² + BC² = BD² ( Pythagoras theorem )
12² + 3² = BD²
144+9 = BD²
BD = √153
In triangle ABD....
AB² + BD² = AD² ( Pythagoras theorem )
AB² = AD²- BD²
AB² = 13²-(√153)²
AB² = 169 - 153
AB² = 16
=> AB = √16
=> AB = 4 cm .Ans
Answered by
2
Answer:
In triangle BCD,
Angle C= 90°
Therefore,
DB^2=BC^2+CD^2
=12^2+3^2
=144+9
=153
Hence,
DB=root 153
Now, In triangle ABD,
Angle B=90°
Therefore,
AD^2 =AB^2+ BD^2
13 ^2=AB^2+153
169-153=AB^2
AB=4 ans...
Hope this will help you.
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