sin²25°+2sin60°+tan45°-tan60°+cos²25°=
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sin²25°+2sin60°+tan45°-tan60°+cos²25°=
sin²25°+2sin60°+tan45°-tan60°+cos²25°=
sin²25°+2sin60°+tan45°-tan60°+cos²25°=
解
原式
=(sin²25+cos²25)+2sin60+tan45-tan60
=1+2×(√3/2)+1-√3
=1+√3+1-√3
=2