§1 三角函数计算 1-202020(1)(1)0(1)12tan45-318 (2) (2018-2019)()2cos60(--1)323331-1012018(3)(2-33)tan303tan30cos60(-2018-)(-)2tan60 (4)(cos60)(1)183(5)cos45-sin451221-2-1 0(tan30-1)(-)2sin30 (6)-(cos60)242-1(7)18(-cos60)-12-1tan45-(1-tan60)2 (9)(-12)-13tan30(1-2)0cos30 (11)-123(-12)-2(-3.14-)0-1-3 (13)(1x21)x2-4x4x24(xsin60) (15)(23-58)(-75-18) (17)12-(tan30)-13(1tan60-tan45)-20190 (19)24(--13)-1101tan45(2019-cos30) (21)(-1)02cos60sin309(12)-1 (23)-1223tan452sin45cos45-4 (25)(35)(5-2)-631 sin45(27)(25-2)2(-225)2 (29)(3x2)216 (31)18-3232--tan30 (33)(56)(5223) (35)(812)32(12)1(12)0 (37)(2tan45)2-325082cos60sin30 2 (8)4sin30-(cos60-sin60)2tan602 (10) (-1)2tan60(2019)0(tan30-sin60)2 (12)-3(sin60-cos45)0-tan60(-1-14) (14)(2)218sin45cos45(-132) (16)3812tan60-2-183 (18)(sin60)-1384-sin3070.875 (20)3-2(323-1)2cos3023sin60 (22)18-tan302sin30tan45tan45 (24)(312-2148)23 3 (26)(53)(52)-36(-1-12) (28)12(2x1)3-4 (30)2cos45(sin60cos60)2tan452 (32)(sin60)-1332-sin60(-2019)0 (34)(5-)0-6tan30(1-22)1-3 (36)(6-215)23413cos30sin6062 -1(38)(15)1(13)(13)13sin45cos4512 1 (39)(21261348)2tan60(40)(2552)(2552)(52)2 3 (41)(24-1)-(16)sin45cos45 (42)(253)(253)tan60-sin60 282cos230(43)(2019)sin452cos60cos45 (44)124-2-sin245tan45 tan45022(2cos45sin45)(45)2sin45(cos60sin60)2(1)1(46)(tan60)-18 tan452 (47)(tan60)-13-sin30(20193)04 (49)(12)2-tan6012-tan30tan60 (51)24-(12)-12121--tan30 (53)-(-12)-1-(23)(2233)tan60 (55)(812)32(cos45)1(3)0 (57)(2tan45)2-21882tan60 (59)(1091 36tan60)02tan60 (61)sin230(-12)-1-2sin30cos30cos230 (63)sin245cos245(1sin45tan45)2-8 (65)sin245cos230--3(cos30-sin30)2 (67)cos45osin45o--cos60sin30(2019-)0-tan450 (69)2sin2306sin260-24(tan60-cos60)0 (71)sin60sin30-sin45cos45-8tan60-102(tan45) 3(73)cos30sin45sin30cos45--tan45cos45 (75)3cos302sin45-(12)112 (48)-(-13)-122cos45sin60tan60 (50)12(1-)0--3sin60-(-1)-2tan452 (52)(cos60)-132-tan60(sin60-2019)0 (54)(2015-)0-63tan30(1-22)2-3 (56)(3-tan60)23413cos30sin6063 -1(58)-tan60(tan45tan60)(tan45tan60)13(60)(72)(72)(52)2(1tan60)2 (62)sin260cos260(2)2-tan45 (64)sin230sin260-8(tan60-1)0 (66)18-tan60-1sin260cos245 (68)2sin30-cos45(-112)sin60cos30 (70)32sin30cos60-cos45sin60cos30 (72)sin600cos600+2sin30°+3cos60°-4tan45° (74)cos30°sin45°+sin30°cos45° -tan60° (76)1sin60012tan6002tan450 2 本文来源:https://www.wddqw.com/doc/f6d2964a1411cc7931b765ce05087632311274a6.html