cos60/1+sin60 +1/tan30

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cos60/1+sin60+1/tan30cos60/1+sin60+1/tan30cos60/1+sin60+1/tan30=(1/2)/(1+√3/2)+1/(√3/3)=1/(2+√3)+√3=

cos60/1+sin60 +1/tan30
cos60/1+sin60 +1/tan30

cos60/1+sin60 +1/tan30
=(1/2)/(1+ √3/2)+1/(√3/3)
=1/(2+ √3) +√3
=2-√3+√3
=2

=1/(1/2)+根号3/2+1/(根号3/3)
=2+3*根号3/2


cos60/(1+sin60) +1/tan30
=1/2÷(1+√3/2)+1/(√3/3)
=1÷(2+√3)+√3
=1÷(2+√3)+√3(2+√3)÷(2+√3)
=(1+2√3+3)÷(2+√3)
=(4+2√3)÷(2+√3)
=2

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