1、(1) sin 260cos 260 (2) -tan450o45sinc(3)cos45sin30 (4)sin 2300+cos2300(5)tan45sin30cos60 (6) 023tan45cos(7)2sin300cos45 0 (8)2sin30+3cos60-4tan45 (9)cos30sin45+sin30cos45 (10) 0045tan26t1si(11) cos30+ sin45 (12)2sin30 0+3sin6004tan45 0 32(13)tan30 0sin450+tan600cos450 (14) 0045tan26t13si(15) (16)006
2、cos3sin 006cot45tan(17) (18)30sinco30tan415si60co22 0045tan3t1(19) )60sin45(co30sin6co2345sin00(20)sin 230+cos245+ sin60tan45(21)(22)(23)(24) + sin45 (25)22cos306tant(26) (27)(28) (29)(30) (31)(32) (33)(34)(35)sin45+3tan30+4cos30 (36)cos260tan45+sin60tan60(37) (38)(39)(40) (41)(42) (43)(44) (45)(46) (47)(48) (49)(50)(51)(52) (53)(54)(55) (56)(57)(58) (59)(60) (61)(62)(63)