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2pi minus (or pi plus) sin^-1(4/5) + sin^-1(5/13) + sin^-1(16/65)

The same question, asked 3 times: 9 May 2023 S2*, 15 May 2023 S1*, 11 May 2024 S2. Every wording below, oldest first.

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  1. Question 1

    9 May 2023 S2

    112
    2π−(sin⁡−145+sin⁡−1513+sin⁡−11665)2\pi - \left(\sin^{-1}\frac{4}{5} + \sin^{-1}\frac{5}{13} + \sin^{-1}\frac{16}{65}\right) is equal to

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  2. Question 2

    15 May 2023 S1

    134
    2π−(sin⁡−145+sin⁡−1513+sin⁡−11665)2\pi - \left(\sin^{-1}\frac{4}{5}+\sin^{-1}\frac{5}{13}+\sin^{-1}\frac{16}{65}\right) is equal to

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  3. Question 3

    11 May 2024 S2

    134
    π+sin⁡−1 ⁣45+sin⁡−1 ⁣513+sin⁡−1 ⁣1665\pi+\sin^{-1}\!\frac{4}{5}+\sin^{-1}\!\frac{5}{13}+\sin^{-1}\!\frac{16}{65} is equal to

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