NDA Math Trigonometric Ratios of Angles and Equations Part 2

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Question : 13 of 75
 
Marks: +1, -0
If tan(45∘+θ)=1+sin‌2‌θ, where −‌
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4
<θ
<‌
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4
, then what is the value of cos‌2‌θ?
[NDA-I 2022]
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