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Byju's Answer
Standard IX
Mathematics
Relationship between Trigonometric Ratios
Find the valu...
Question
Find the value of
tan
2
θ
+
1
tan
2
θ
if
tan
θ
+
1
tan
θ
=
2
Open in App
Solution
Given,
tan
θ
+
1
tan
θ
=
2
Squaring both sides we get
(
tan
θ
+
1
tan
θ
)
2
=
4
⇒
tan
2
θ
+
1
tan
2
θ
+
2
tan
θ
.
1
tan
θ
=
4
⇒
tan
2
θ
+
1
tan
2
θ
+
2
=
4
⇒
tan
2
θ
+
1
tan
2
θ
=
2
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