Question

Решить уравнение  2sin^2 x +sinx * cosx - 3cos^2 x =0

Answer 1

$frac{2sin x^{2} }{sin x^{2} }$-$frac{sinx}{sin x^{2} }$*$frac{cosx}{sin ^{2}x }$-$frac{3cos x^{2} }{sin ^{2} x}$=0
2-ctgx-3$ctg^{2}$=0
3$ctg^{2}$+ctg-2=0
ctgx=y
3