sin10π-√2cos(-19π/4)+tan(-13π/3)=
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sin10π-√2cos(-19π/4)+tan(-13π/3)=sin10π-√2cos(-19π/4)+tan(-13π/3)=sin10π-√2cos(-19π/4)+tan(-13π/3)=s
sin10π-√2cos(-19π/4)+tan(-13π/3)=
sin10π-√2cos(-19π/4)+tan(-13π/3)=
sin10π-√2cos(-19π/4)+tan(-13π/3)=
sin10π=0
cos(-19π/4)=cos5π/4= -√2/2
tan(-13π/3)=tan(2π/3)= -√3
所以
原式=0 +√2/2 -√3=√2/2 -√3
计算sin10π-√2cos(-19π/4)-tan(-13π/3)=?
计算sin10π-√2cos(-19π/4)-tan(-13π/3)=
sin10π-√2cos(-19π/4)+tan(-13π/3)=
求值sin10π/3-根号2cos(-19π/4)+tan(13π/3)
求值:sin10兀/3-√2cos(-19兀/4)+tan(-13兀/3)
式子sin10π/3-根号2cos(-19π/4)-1/2tan(-13π/3)的值是
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