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Byju's Answer
Standard XII
Mathematics
Domain
43. The value...
Question
43. The value of tan15^° /2-sec15^° is equal to (1) 1/23 (2) 3/2 (3) -1/23 (4) 1/83
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Q.
1
+
2
3
2
!
+
3
3
3
!
+
4
3
4
!
+
.
.
.
.
.
.
∞
equals
Q.
The sum
1
+
1
3
+
2
3
1
+
2
+
1
3
+
2
3
+
3
3
1
+
2
+
3
+
⋅
⋅
⋅
+
1
3
+
2
3
+
3
3
+
⋅
⋅
⋅
+
15
3
1
+
2
+
3
+
⋅
⋅
⋅
+
15
−
1
2
(
1
+
2
+
3
+
⋅
⋅
⋅
+
15
)
is equal to :
Q.
The sum
1
+
1
3
+
2
3
1
+
2
+
1
3
+
2
3
+
3
3
1
+
2
+
3
+
⋅
⋅
⋅
+
1
3
+
2
3
+
3
3
+
⋅
⋅
⋅
+
15
3
1
+
2
+
3
+
⋅
⋅
⋅
+
15
−
1
2
(
1
+
2
+
3
+
⋅
⋅
⋅
+
15
)
is equal to :
Q.
1
+
2
3
2
!
+
3
3
3
!
+
4
3
4
!
+
.
.
.
=
c
e
.
Find
c
Q.
Which one of the following is not equal to
8
3
-
1
/
2
?
(a)
2
3
-
1
/
2
(b)
8
-
1
/
6
(c)
1
(
8
3
)
1
/
2
(d)
1
2
