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Byju's Answer
Standard X
Mathematics
Length of Arc of a Sector
In the adjoin...
Question
In the adjoining figure, AD =4 cm BD = 3 cm and CB = 12 cm Find
c
o
t
θ
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Solution
A
B
2
=
A
D
2
+
B
D
2
A
B
2
=
25
⇒
A
B
=
5
A
C
2
=
A
B
2
+
C
B
2
A
C
2
=
5
2
+
12
2
A
C
2
=
169
⇒
A
C
=
13
cot
θ
=
C
B
A
B
=
12
5
.
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Similar questions
Q.
In figure 1,
A
D
=
3
c
m
,
B
D
=
4
c
m
and
C
B
=
12
c
m
, then the value of tan
θ
equals
Q.
In Fig. 5.48, AD = 4 cm, BD = 3 cm and CB = 12 cm, find the cot θ.
(a)
12
5
(b)
5
12
(c)
13
12
(d)
12
13