Формулы тригонометрических функции двойного и половинного угла
Формулы двойного угла
cos2α = cos2α - sin2α
cos2α = 2cos2α - 1
cos2α = 1 - 2sin2α
sin2α = 2sinα * cosα
tg2α =
ctg2α =
Формула половинного угла
;
;
;
;
Формулы понижения степени
Формулы тройного угла
Вопросы к конспектам
Упростите выражение: 2cos22α - cos4α
Вычислить если tgα = 0,2: format('truetype')%3Bfont-weight%3Anormal%3Bfont-style%3Anormal%3B%7D%3C%2Fstyle%3E%3C%2Fdefs%3E%3Cline%20stroke%3D%22%23B94A48%22%20stroke-linecap%3D%22square%22%20stroke-width%3D%221%22%20x1%3D%222.5%22%20x2%3D%2266.5%22%20y1%3D%2216.5%22%20y2%3D%2216.5%22%2F%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2234.5%22%20y%3D%2211%22%3E2%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%227.5%22%20y%3D%2230%22%3E3%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22math12ed72e0d2d50af08c235c494fe%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2217.5%22%20y%3D%2230%22%3E%2B%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2226.5%22%20y%3D%2230%22%3E4%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%2233.5%22%20y%3D%2230%22%3Ec%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%2239.5%22%20y%3D%2230%22%3Eo%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%2246.5%22%20y%3D%2230%22%3Es%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2253.5%22%20y%3D%2230%22%3E2%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%2260.5%22%20y%3D%2230%22%3E%26%23x3B1%3B%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22math12ed72e0d2d50af08c235c494fe%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2275.5%22%20y%3D%2222%22%3E%3D%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2284.5%22%20y%3D%2222%22%3E%3F%3C%2Ftext%3E%3C%2Fsvg%3E)
Если tgα = 0,2,format('truetype')%3Bfont-weight%3Anormal%3Bfont-style%3Anormal%3B%7D%3C%2Fstyle%3E%3C%2Fdefs%3E%3Cline%20stroke%3D%22%23B94A48%22%20stroke-linecap%3D%22square%22%20stroke-width%3D%221%22%20x1%3D%222.5%22%20x2%3D%2263.5%22%20y1%3D%2216.5%22%20y2%3D%2216.5%22%2F%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2233.5%22%20y%3D%2211%22%3E5%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%227.5%22%20y%3D%2230%22%3E6%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22math12ed72e0d2d50af08c235c494fe%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2217.5%22%20y%3D%2230%22%3E%2B%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2226.5%22%20y%3D%2230%22%3E7%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%2233.5%22%20y%3D%2230%22%3Es%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%2237.5%22%20y%3D%2230%22%3Ei%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%2242.5%22%20y%3D%2230%22%3En%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2250.5%22%20y%3D%2230%22%3E2%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%2257.5%22%20y%3D%2230%22%3E%26%23x3B1%3B%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22math12ed72e0d2d50af08c235c494fe%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2272.5%22%20y%3D%2222%22%3E%3D%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2281.5%22%20y%3D%2222%22%3E%3F%3C%2Ftext%3E%3C%2Fsvg%3E)
Упростите: 1 – 8sin2x · cos2x
Упростите: format('truetype')%3Bfont-weight%3Anormal%3Bfont-style%3Anormal%3B%7D%3C%2Fstyle%3E%3C%2Fdefs%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%223.5%22%20y%3D%2222%22%3E2%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%2210.5%22%20y%3D%2222%22%3Es%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%2214.5%22%20y%3D%2222%22%3Ei%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%2219.5%22%20y%3D%2222%22%3En%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2227.5%22%20y%3D%2215%22%3E2%3C%2Ftext%3E%3Cline%20stroke%3D%22%23B94A48%22%20stroke-linecap%3D%22square%22%20stroke-width%3D%221%22%20x1%3D%2233.5%22%20x2%3D%2244.5%22%20y1%3D%2216.5%22%20y2%3D%2216.5%22%2F%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%2238.5%22%20y%3D%2211%22%3E%26%23x3B1%3B%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2239.5%22%20y%3D%2229%22%3E2%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22math117e62166fc8586dfa4d1bc0e17%22%20font-size%3D%2212%22%20text-anchor%3D%22middle%22%20x%3D%2253.5%22%20y%3D%2222%22%3E%2B%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%2262.5%22%20y%3D%2222%22%3Ec%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%2268.5%22%20y%3D%2222%22%3Eo%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%2275.5%22%20y%3D%2222%22%3Es%3C%2Ftext%3E%3Ctext%20fill%3D%22%23B94A48%22%20font-family%3D%22Arial%22%20font-size%3D%2212%22%20font-style%3D%22italic%22%20text-anchor%3D%22middle%22%20x%3D%2281.5%22%20y%3D%2222%22%3E%26%23x3B1%3B%3C%2Ftext%3E%3C%2Fsvg%3E)
Последнее изменение: Воскресенье, 29 Январь 2017, 23:34