Sin-1 (sin 7) + cos-1 (cos13) =
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=(−0.0174524064)(0.1218693434)+(0.9998476952)(0.9743700648)
=(−0.0021269133)+(0.9742216635)
=0.9720947502
=(−0.0021269133)+(0.9742216635)
=0.9720947502
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