📅 NSB 2013🎓 HS🔄 Round 3#️⃣ Q1🌟 BONUS✍️ Short Answer
Simplify the following expression: sec^2(3π/4) - csc^2(π/4) - cos^2(4π) [secant squared of 3 pi over 4 minus cosecant squared of pi over 4 minus cosine squared of 4 pi].
✔️Answer:-1
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