In triangle abc angle b = 90° angle a =30° and ac = 10cm. find bc
Answers
Answered by
9
Answer:
BC = 5cm
Step-by-step explanation:
sin 30° = BC/AC = BC/10 (AC = 10)
BC/10 = 1/2 ( sin 30° = 1/2 )
BC = 1/2 × 10 = 5
Answered by
3
Answer:
24 cm2
Step-by-step explanation:
AC
2
=AB
2
+BC
100=64+BC
2
BC=6
Area of △ABC=
2
1
×AB×BC
=
2
1
×8×6=24 cm2
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