Question

2sinpi/24*cospi/24/(cos^{2}pi/24-sin^{2}pi/24)  буду безумно благодарна)))

Answer 1

2sin(pi/24)*cos(pi/24)/(cos^{2}(pi/24)-sin^{2}(pi/24))=

=sin(pi/12) / cos (pi/12) = tg (pi/12)