sin(-1320°)cos1110°+cos(-1020°)sin750°+tan495°

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sin(-1320°)cos1110°+cos(-1020°)sin750°+tan495°
sin(-1320°)cos1110°+cos(-1020°)sin750°+tan495°

sin(-1320°)cos1110°+cos(-1020°)sin750°+tan495°
sin(-1320°)cos1110°+cos(-1020°)sin750°+tan495°
=sin120°cos30°+cos60°sin30°+tan135°
=sin60°cos30°+cos60°sin30°+(-tan45°)
=sin(60°+30°)-tan45°
=sin90°-tan45°
=1-1
=0