Question

In the figure b=90,A=30AC=10cm then find Bc​

Answer 1

Let AB=x cm
AB2+BC2=AC2
A
B
2
+
B
C
2
=
A
C
2

AB2=AC2−BC2
A
B
2
=
A
C
2
-
B
C
2

=100−64=36
=
100
-
64
=
36

AB=6 cm.