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Standard XII
Mathematics
Question
2
cos
75
∘
sin
15
∘
−
sin
35
∘
2
cos
55
∘
is
1
1
m
. m is
Open in App
Solution
Verified by Toppr
2
cos
75
∘
sin
15
∘
−
sin
35
∘
2
cos
55
∘
=
2
cos
(
90
−
15
)
∘
sin
15
∘
−
sin
(
90
−
55
)
∘
2
cos
55
∘
=
2
sin
15
∘
sin
15
∘
−
cos
55
∘
2
cos
55
∘
=
2
−
1
2
=
3
2
=
1
1
2
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Similar Questions
Q1
2
cos
75
∘
sin
15
∘
−
sin
35
∘
2
cos
55
∘
is
1
1
m
. m is
View Solution
Q2
Without using trigonometric tables, evaluate:
(i)
sin
50
°
cos
40
°
+
cosec
40
°
sec
50
°
-
4
cos
52
°
cosec
38
°
(ii)
cos
75
°
sin
15
°
+
sin
12
°
cos
78
°
-
cos
18
°
cosec
72
°
(iii)
2
cosec
67
°
sec
23
°
-
tan
70
°
cot
20
°
-
cos
0
°
+
tan
38
°
tan
52
°
(iv)
tan
76
°
cot
14
°
+
sec
58
°
cosec
32
°
-
sin
35
°
sec
55
°
-
8
sin
2
30
°
View Solution
Q3
Simplify
sin
35
∘
cos
55
∘
+
cos
55
∘
sin
35
∘
−
2
cos
2
60
∘
View Solution
Q4
The value of
cos
15
∘
+
sin
15
∘
cos
15
∘
−
sin
15
∘
is
View Solution
Q5
Evaluate the following :
(
s
i
n
35
∘
c
o
s
55
∘
)
2
+
(
c
o
s
55
∘
s
i
n
35
∘
)
2
−
2
c
o
s
60
∘
View Solution