In figure ∆, ⊥ ,∠ = 45°, then find AD.
Answers
Answered by
1
Answer:
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Step-by-step explanation:
From right angled △ABC,
(i) ACBC=sin45∘
32BC=21
Or BC=3
(ii) By Pythagoras theorem
(AB)2=(AC)2−(BC)2
=(32)2−(3)2
=18−9
=9
AB=3 cm.
Answered by
3
Answer:
3 cm
Step-by-step explanation:
From right angled △ABC,
(i) BC/AC =sin45 ∘
2/3 BC = 1/2
Or BC=3
(ii) By Pythagoras theorem
(AB)^2 =(AC) ^2 −(BC) ^2
=(3 √2 )^ 2 −(3) ^2
=18−9
=9
AB=3 cm.
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