Let's boycott Calculus this time! (Part 2)

Geometry Level 2

Find the largest value of aa, such that for all real x x ,

cos⁡2x+sec⁡2x≥a. \cos^2 x + \sec^2 x \geq a.

Try out Part 1, Part 3.

Arkajyoti Banerjee by Arkajyoti Banerjee
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