C\u00e2u 5 (1,0 \u0111i\u1ec3m).<\/strong><\/p>\n a) Cho cot\u03b1 = 2. T\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c P = (sin<\/p>\n \u03b1 + cos<\/p>\n \u03b1)\/(sin<\/p>\n \u03b1 \u2013 cos<\/p>\n \u03b1)<\/p>\n b) M\u1ed9t x\u00ed nghi\u1ec7p c\u00f3 50 c\u00f4ng nh\u00e2n, trong \u0111\u00f3 c\u00f3 30 c\u00f4ng nh\u00e2n tay ngh\u1ec1 lo\u1ea1i A, 15 c\u00f4ng nh\u00e2n tay ngh\u1ec1 lo\u1ea1i B, 5 c\u00f4ng nh\u00e2n tay ngh\u1ec1 lo\u1ea1i C. L\u1ea5y ng\u1eabu nhi\u00ean theo danh s\u00e1ch 3 c\u00f4ng nh\u00e2n. T\u00ednh x\u00e1c su\u1ea5t \u0111\u1ec3 3 ng\u01b0\u1eddi \u0111\u01b0\u1ee3c l\u1ea5y ra c\u00f3 1 ng\u01b0\u1eddi tay ngh\u1ec1 lo\u1ea1i A, 1 ng\u01b0\u1eddi tay ngh\u1ec1 lo\u1ea1i B, 1 ng\u01b0\u1eddi tay ngh\u1ec1 lo\u1ea1i C.<\/p>\n C\u00e2u 6 (1,0 \u0111i\u1ec3m).<\/strong>Cho h\u00ecnh ch\u00f3p S.ABC c\u00f3 \u0111\u01b0\u1eddng cao SA b\u1eb1ng 2a, tam gi\u00e1c ABC vu\u00f4ng \u1edf C c\u00f3 AB = 2a, g\u00f3c CAB = 30<\/p>\n . G\u1ecdi H l\u00e0 h\u00ecnh chi\u1ebfu vu\u00f4ng c\u1ee7a A tr\u00ean SC. T\u00ednh theo \u03b1 th\u1ec3 t\u00edch c\u1ee7a kh\u1ed1i ch\u00f3p H.ABC. T\u00ednh c\u00f4-sin c\u1ee7a g\u00f3c gi\u1eefa hai m\u1eb7t ph\u1eb3ng (SAB), (SBC).<\/p>\n <\/p>\n <\/strong><\/p>\n<\/p>\n T\u1ea5t c\u1ea3 n\u1ed9i dung b\u00e0i vi\u1ebft. C\u00e1c em h\u00e3y xem th\u00eam v\u00e0 t\u1ea3i file chi ti\u1ebft t\u1ea1i \u0111\u00e2y:<\/strong>Download<\/p>\n","protected":false},"excerpt":{"rendered":" Tr\u01b0\u1eddng THPT Th\u1ea1ch Th\u00e0nh 1, t\u1ec9nh Thanh H\u00f3a t\u1ed5 ch\u1ee9c thi th\u1eed l\u1ea7n 1 n\u0103m 2016, \u0111\u1ec1 thi th\u1eed m\u00f4n To\u00e1n c\u00f3 \u0111\u00e1p \u00e1n chi ti\u1ebft, xem chi ti\u1ebft d\u01b0\u1edbi \u0111\u00e2y: C\u00e2u 5 (1,0 \u0111i\u1ec3m). a) Cho cot\u03b1 = 2. T\u00ednh gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c P = (sin 4 \u03b1 + cos 4 \u03b1)\/(sin […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[28],"tags":[],"yoast_head":"\n\u0110\u00e1p \u00e1n \u0111\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n THPT Th\u1ea1ch Th\u00e0nh 1 2016<\/strong><\/h3>\n