1.

\frac{\sin 30^{\circ}+\tan 45^{\circ}-\cos e c 60^{\circ}}{\sec 30^{\circ}+\cos 60^{\circ}+\cot 45^{\circ}}

Answer»

=>(1/2+1-2/√3)/(2/√3+1/2+1)

=>(3/2-2/√3)/(3/2+2/√3)

=>(3√3-4)/(3√3+4)

=>(3√3-4)^2/(27-16)

=>(27+16-24√3)/11

=>(43-24√3)/11



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