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Byju's Answer
Standard XII
Mathematics
Chain Rule of Differentiation
If sin2θ +s...
Question
If
sin
2
θ
+
sin
θ
=
1
, then find
θ
.
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Solution
sin
2
θ
+
sin
θ
−
1
=
0
⇒
sin
θ
=
−
1
±
√
1
−
4
(
−
1
)
2
=
−
1
±
√
5
2
=
0.618
⇒
θ
=
38.17
°
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