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A) TG=1/2
CTG=2
sin=1/sqrt(5)
cos=2/sqrt(5)
b)25^2-24^2=7
cos=24/25
sin=7/15
tg=7/24
ctg=24/7
c)3^2-sqrt(5)^2=2
cos=2/3
tg=sqrt(5)/2
ctg=2/sqrt(5)
d)tg=60/11
60^2+11^2=61
sin=60/61
cos=11/61
f)17^2-15^2=8
sin=8/17
tg=8/15
ctg=15/8
g)ctg=4/3
4^2+3^2=5
sin=3/5
cos=4/5
H)ctg=3
tg=1/3
1^2+3^2=sqrt(10)
sin=1/sqrt(10)
cos=3/sqrt(10)