UPSC 2013 CDS 2 Math Paper

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Question : 83 of 100

Marks: +1, -0

What is ‌‌

cos2(45∘+θ)+cos2(45∘−θ)

tan(60∘+θ)‌tan(30∘−θ)

equal to?

[2013 CDS-II]

–1
0
1
2

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