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Mathematics, 14.05.2021 09:50 VamPL

PtQtR=180
cos (QR-P) tcas (R+P-Q) + cos(P+Q-R)
sin²p+heas P. cos Q. cas R+ cos²p​

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Answers: 3

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PtQtR=180
cos (QR-P) tcas (R+P-Q) + cos(P+Q-R)
sin²p+heas P. cos Q. cas R+ cos²p​...

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