Question

2sint/sin2t-cost упростить выражение

Answer 1

$\frac{2Sint}{Sin2t}-Cost=\frac{2Sint}{2SintCost}-Cost=\frac{1}{Cost} -Cost=\frac{1-Cos^{2}t }{Cost}=\frac{Sin^{2}t }{Cost}=tgtSint$