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sin(-1560º）cos1290°+cos(-1020°)sin(-690°)+tan1035
=-sin(4*360°+120°)cos(3*360°+210°)+cos(-3*360°+60°)*sin(-2*360°+30°)+tan(3*360°-45°)
=-sin120°cos210°+cos(-60°)*sin30°+tan(-45°)
=-sin(180°-60°)cos(180°+30°)+cos60°*sin30°-tan45°
=sin60°cos30°+cos60°*sin30°-1
=√3/2*√3/2+1/2*1/2-1
=3/4+1/4-1
=0
=-sin(4*360°+120°)cos(3*360°+210°)+cos(-3*360°+60°)*sin(-2*360°+30°)+tan(3*360°-45°)
=-sin120°cos210°+cos(-60°)*sin30°+tan(-45°)
=-sin(180°-60°)cos(180°+30°)+cos60°*sin30°-tan45°
=sin60°cos30°+cos60°*sin30°-1
=√3/2*√3/2+1/2*1/2-1
=3/4+1/4-1
=0
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