8.10. b) cos alpha = 5/6 c) tg * alpha = 1/3 Zbuduj taki kąta alpha, alpha in(0^ ,90^ ) , dla którego: a) sin alpha = 2/(sqrt(5)) b) cos alpha = 1/(2sqrt(2)) tga = sqrt(7) d) ctga = 4 . d) ctg * alpha = 4/(sqrt(6))

8.10. b) cos alpha = 5/6 c) tg * alpha = 1/3 Zbuduj taki kąta alpha, alpha in(0^ ,90^ ) , dla którego: a) sin alpha = 2/(sqrt(5)) b) cos alpha = 1/(2sqrt(2)) tga = sqrt(7) d) ctga = 4 . d) ctg * alpha = 4/(sqrt(6))