20) In ∆ABC , AB⊥BC , ∠ACB =450 , AB=15m , value of BC is
A) 15m B) 10m C) 5m
please answer fast
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Answered by
1
Answer:
A) 15 -(by 45-45-90 theorem)
Answered by
1
Answer:
A) 15m
Step-by-step explanation:
In right triangle ABC
angle ACB = 45°
Therefore , By trigonomtery ratio
AB/BC = tan45°
15/BC = 1 (tan45°=1)
By cross multiplication we get,
BC = 15m
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