Тригонометрические уравнения

 

sin x = m ; |m| 1

x = (-1)n arcsin m + k, k Z

sin x =1 sin x = 0

x = /2 + 2k x = k

sin x = -1

x = -/2 + 2 k

cos x = m; |m| 1

x = arccos m + 2k

cos x = 1 cos x = 0

x = 2k x = /2+k

cos x = -1

x = + 2k

tg x = m

x = arctg m + k

ctg x = m

x = arcctg m +k

sin x/2 = 2t/(1+t2); t - tg

cos x/2 = (1-t)/(1+t)

Геометрия