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IUT_10-11
HSC - উচ্চতর গণিত ২য় পত্র
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অধ্যায়-০৭ঃ বিপরীত ত্রিকোণমিতিক ফাংশন ও ত্রিকোণমিতিক সমীকরণ
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How many solutions are there for
sec
4
θ
−
sec
2
θ
=
2
;
[
0
∘
<
θ
<
18
0
∘
]
\text { How many solutions are there for } \sec 4 \theta-\sec 2 \theta=2 ;\left[0^{\circ}<\theta<180^{\circ}\right]
How many solutions are there for
sec
4
θ
−
sec
2
θ
=
2
;
[
0
∘
<
θ
<
18
0
∘
]
A.
3
3
3
B.
5
5
5
C.
6
6
6
D.
9
9
9
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