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Byju's Answer
Standard XII
Mathematics
Circular Measurement of Angle
Find the cosi...
Question
Find the cosine of 8
o
12'.
A
0.84
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B
0.54
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C
0.44
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D
0.98
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Solution
The correct option is
C
0.98
cos
8
°
12
′
In
60
′
⟶
1
°
1
′
⟶
1
°
60
°
12
′
⟶
12
′
60
=
0.2
°
∴
cos
8
°
12
′
=
cos
8.2
°
=
0.98
Hence, the answer is
0.98.
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0
Similar questions
Q.
(
0.5
)
4
−
(
0.4
)
4
(
0.5
)
2
+
(
0.4
)
2
=
Q.
The value of E for elements are as follows:
F
e
+
2
+
2
e
→
F
e
;
E
o
=
0.44
V
F
e
+
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+
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e
→
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e
+
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;
E
o
=
+
0.77
V
S
n
+
4
+
2
e
→
S
n
+
2
;
E
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=
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0.13
V
I
2
+
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e
→
2
I
;
E
o
=
+
0.54
V
C
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+
+
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→
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r
;
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=
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V
Based on the above data correct statements are:
Q.
The angle
θ
whose cosine is equal to its tangent is given by
sin
θ
=
n
sin
18
o
. Find the value of n.
Q.
In the isosceles triangle
A
B
C
,
∣
∣
→
A
B
∣
∣
=
∣
∣
→
B
C
∣
∣
=
8
,
a point
E
divides
A
B
internally in the ratio
1
:
3
, then the cosine of the angle between
→
C
E
&
→
C
A
is ( where
|
→
C
A
|
=
12
)
Q.
Find out the following squares by using the identities:
0.54
×
0.54
−
0.46
×
0.46
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