UPSC CDS 1 2022 Math Paper

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Question : 87 of 100

Marks: +1, -0

If ‌

cos‌θ

cosecθ+1

+‌

cos‌θ

cosecθ−1

=2 where 0<θ<90∘, then what is the value of sin4θ+cos4θ ?

2
1
‌
1
2
‌
1
4

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