In the figure ABC is a right angle in which ZB=90',
BC=6cm and ZA=30° then the length of AC is
300
B. 12cm
DEL
A. 6 13 cm
D. 12 13 cm
B
C. 2 V3 cm
6cm
Answers
Answered by
1
Step-by-step explanation:
Draw a right angled △ABC using given instructions:
Here sin30=
AC
BC
2
1
=
20
BC
Or BC=10 cm
By Pythagoras theorem:
(AB)
2
=(AB)
2
−(BC)
2
=(20)
2
−(10)
2
=300
AB=10
3
cm.
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