计算下列的值（一）sin5π/2+cos²17π/3-tan²23π/6
计算下列的值（一）sin5π/2+cos²17π/3-tan²23π/6
sin5π/2+cos²17π/3-tan²23π/6
sin5π/2+cos²17π/3-tan²23π/6
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sin5π/2+cos²17π/3-tan²23π/6
=sinπ/2+cos²π/3-tan²(-π/6)
=1+1/4-1/3
=11/12
=sinπ/2+cos²π/3-tan²(-π/6)
=1+1/4-1/3
=11/12
1年前
7
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