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Byju's Answer
Standard XII
Mathematics
Chain Rule of Differentiation
If tan 25∘= a...
Question
If
t
a
n
25
∘
=
a
t
h
e
n
t
h
e
v
a
l
u
e
o
f
t
a
n
205
∘
−
t
a
n
115
∘
t
a
n
245
∘
+
t
a
n
335
∘
in terms of 'a' is_______
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Solution
t
a
n
205
−
t
a
n
115
∘
t
a
n
245
∘
+
t
a
n
335
∘
=
t
a
n
(
180
∘
+
25
∘
)
−
t
a
n
(
90
∘
+
25
∘
)
t
a
n
(
270
∘
−
25
∘
)
+
t
a
n
(
360
∘
−
25
∘
)
=
t
a
n
25
∘
−
(
−
c
o
t
25
∘
)
c
o
t
25
∘
+
t
a
n
25
∘
=
a
+
1
a
1
a
−
a
=
a
2
+
1
a
1
+
a
2
a
=
1
+
a
2
1
+
a
2
=1
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Similar questions
Q.
if
tan
25
∘
=
x
,
then
tan
155
∘
−
tan
115
∘
1
+
tan
155
∘
tan
115
∘
is equal to
Q.
If
tan
25
∘
=
x
,
prove that
tan
155
∘
−
tan
115
∘
1
+
tan
155
∘
tan
115
∘
=
1
−
x
2
2
x
.
Q.
The value of
1
−
tan
2
45
∘
1
+
tan
2
45
∘
=
Q.
What is the value of tan 25
o
?