ii_chet_9_klass_algebra_sor№_4_obsheobr_original_1_variant

klass _______ imya, familiya _________________________data _____ algebra 9 klass sor №4 1-variant 1. naydite radiannuyu meru ugla, virajennogo v gradusax. (6 ballov) a) 75° b) 100° c) 36° otvet: _______________________________________________ 2. vichislite radius okrujnosti, esli duga dlinoy 0,48 𝑚 styagivaet tsentralniy ugol v 0,8 𝑟𝑎𝑑 . (4 balla) otvet: _______________________________________________ 3. na edinichnoy okrujnosti otmette tochku, poluchennuyu povorotom tochki 𝑃(1; 0) na zadanniy ugol: (4 balla) a) 9𝜋 2 b) 7𝜋 otvet: _______________________________________________ 4. vichislite. (5 ballov) 3𝑠𝑖𝑛 5𝜋 6 + 2𝑡𝑔 𝜋 4 − 12𝑐𝑜𝑠 2𝜋 3 − 𝑐𝑡𝑔 3𝜋 4 otvet: _______________________________________________ 5. opredelite znak chisla. (6 ballov) a) 𝑐𝑜𝑠 2𝜋 3 ∙ 𝑐𝑜𝑠 3𝜋 4 b) 𝑡𝑔420° 𝑐𝑜𝑠 5𝜋 4 otvet: ____...

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