For the given figure BC= 20 cm and angleA=30, then AB =
and AC =
Answers
Answered by
6
Step-by-step explanation:
In tringle ABC
tan 30 = p/b = BC/AB
1/root 3 = 20/AB
AB = 20 root 3.
again,
sin 30 = p/h = BC/AC
1/2 = 20/AC
AC = 40.
AC = 40
AB = 20 root 3
Answered by
0
Answer:
AB=20under root 3
AC=40
Step-by-step explanation:
in triangle ABC,
TAN 30°=BC/AB
1/under root 3=20/AB
AB=20underroot 3
AC²=BC²+AB²
AC²=20²+(20underroot 3)²
AC²=400+400×3
AC²=400+1200
AC²=1600
AC=40
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