计算下列的值(一)sin5π/2+cos²17π/3-tan²23π/6

问题描述:

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
=sinπ/2+cos²π/3-tan²(-π/6)
=1+1/4-1/3
=11/12