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Byju's Answer
Standard XII
Mathematics
Standard Formulae - 1
Sin30=1/2. Ho...
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Sin30=1/2. How? ?
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Q.
Find the value of
1
+
s
i
n
30
∘
c
o
s
30
∘
+
c
o
s
30
∘
1
+
s
i
n
30
∘
Q.
Verify the following equalities.
sec
30
∘
+
tan
30
∘
sec
30
∘
−
tan
30
∘
=
1
+
sin
30
∘
1
−
sin
30
∘
Q.
Prove that :
c
o
s
30
∘
+
s
i
n
60
∘
1
+
c
o
s
60
∘
+
s
i
n
30
∘
=
√
3
2
Q.
t
a
n
55
∘
c
o
t
35
∘
×
s
i
n
30
∘
=
A
The value of 2A is ______.
Q.
t
a
n
30
°
×
2
×
s
i
n
30
°
×
c
o
s
30
°
=
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Standard XII Mathematics
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