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Question
Mathematics
The number of solutions of the equation sin x = cos 2 x in the interval (0,10) is
Q. The number of solutions of the equation
sin
x
=
cos
2
x
in the interval
(
0
,
10
)
is _______
325
176
JEE Main
JEE Main 2022
Trigonometric Functions
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Answer:
4
Solution:
sin
2
x
+
sin
x
−
1
=
0
sin
x
=
2
−
1
+
5
=
+
v
e
Only
4
roots