1、(1)sin 260cos 260 (2) -tan450o45sinc(3)cos45sin30 (4)sin 2300+cos2300(5)tan45sin30cos60 (6) 023tan45cos(7)2sin300cos45 0 (6)sin600cos600 (8)2sin30+3cos60-4tan45 (9)cos30sin45+sin30cos45 (10) 0045tan26t1si(11) cos30+ sin45 (12)2sin30 0+3sin6004tan45 0 32(13)tan30 0sin450+tan600cos450 (14) 0045tan26t1
2、3si(15) ;_60cot45tan_,60cos3sin00 (16) =_3si3t145si22(17) 0045tan3t1)60sin45(co30sin6co2345sin00(19)sin 230+cos245+ sin60tan45; (20) + 22cos306tantsin45(21)(22)(24)(25)(26)(27)(28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40)sin45+3tan30+4cos30 (41)cos260tan45+sin60tan60 (42)(43)(44)(45)(46)(47)(48)(49)(50)(51)(52)(53)(54)(55)(56)(57)(58)(59)(60)(61)(62)(63)(64)(65)(66)(67)(68)(69)(70)(71)(72)(73)(74)(75)(76)(77)(78)(79)(80)(81)(82)(83)(84)(85)(86)