Jawabanmu

2014-04-02T07:11:51+07:00
RS = 20 cm²
ST = ? = 2
RT = ? = √404
mencari ST =luas  segitiga
l segitia= 1/2 x a x t
20 = 1/2 x a x 20
20 = a x 10
20/10 = a
a=2
RT menggunakan phitagoras RT² = √RS² + ST² = √400 + 4 = √404
sin T= RS/TR = 20/√404 x √404/√404 = 20/404 √404
cos T= ST/TR =2/√404 = 2/404 √404
tg T = SR/ST = 20/2 = 10

kalo tidak salah
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