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Solve the following.
If , calculate the value of ' '.
If $4\sin^{-1}x + \cos^{-1}x = \pi$, calculate the value of '$x$'.
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From ISC 2025 Improvement Mathematics Paper 1, question 14(iv).
Solve the following.
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From ISC 2025 Improvement Mathematics Paper 1, question 14(iv).