1/4tan²45°+1/sin²30°-3cos²30°+tan45°/cos60°-sin60°/cos60°

1/4tan²45°+1/sin²30°-3cos²30°+tan45°/cos60°-sin60°/cos60°
1/4tan²45°+1/sin²30°-3cos²30°+tan45°/cos60°-sin60°/cos60°

1/4tan²45°+1/sin²30°-3cos²30°+tan45°/cos60°-sin60°/cos60°
原式= 1/4×1²+1/（1/2）²-3×（√3/2）²+1/（1/2）-（√3/2）/（1/2）
=1/4+4-9/4+2-√3
=4-√3

=1/4×1+1/(1/2)²-3×(√3/2)²+1/(1/2)-(√3/2)/(1/2)
=1/2+4-9/4+2-√3
=17/4 -√3