$14^\circ<\alpha<15^\circ$14^\circ<\alpha<15^\circ

$29^\circ<\alpha<30^\circ$29^\circ<\alpha<30^\circ

$60^\circ<\alpha<61^\circ$60^\circ<\alpha<61^\circ

$75^\circ<\alpha<76^\circ$75^\circ<\alpha<76^\circ