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Byju's Answer
Standard XII
Mathematics
Sin2A and Cos2A in Terms of tanA
Prove that i/...
Question
Prove that :
√
1
−
c
o
s
2
θ
1
+
c
o
s
2
θ
=
t
a
n
θ
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Solution
√
1
−
c
o
s
2
θ
1
+
c
o
s
2
θ
=
√
2
s
i
n
2
θ
2
c
o
s
2
θ
=
s
i
n
θ
c
o
s
θ
=
t
a
n
θ
=
RHS
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3
Similar questions
Q.
Prove that :
√
1
−
cos
2
θ
1
+
cos
2
θ
=
tan
θ
Q.
Prove that:
1
−
c
o
s
2
θ
+
s
i
n
2
θ
1
+
c
o
s
2
θ
+
s
i
n
2
θ
=
t
a
n
θ
Q.
Prove that
tan
2
θ
cos
2
θ
=
1
−
cos
2
θ
.
Q.
If
sin
θ
+
sin
2
θ
=
1
, prove that
cos
2
θ
+
cos
4
θ
=
1
.
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Sin2A and Cos2A in Terms of tanA
Standard XII Mathematics
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