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RRB Junior Engineer Stage 1 Model Papers 5
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© examsnet.com
Question : 14
Total: 100
If in ∆ABC,
∠
A
=
90
°
,
B
C
=
a
,
A
C
=
b
and
A
B
=
c
,then the value of
tan
B
+
tan
C
is
a
2
b
c
c
2
b
c
a
2
+
c
2
b
−
1
p
2
=
−
1
b
2
−
1
a
2
Validate
Solution:
In right angled ∆ABC,
tan
B
=
P
B
=
b
c
tan
C
=
P
B
=
c
b
tan
B
+
tan
C
=
b
c
+
c
b
=
b
2
+
c
2
b
c
=
a
2
b
c
[
∵
a
2
=
b
2
+
c
2
]
© examsnet.com
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