TRANSMATH 3e 49Pages219

Math in english *

With the data provided on the figure opposite , determine the values , rounded off to the nearest degree , of the measurements of the angles RST and STR .

triangle srt rectangle en r rs 3.4 cm et rt 5.6cm

1
where is the figure?
Sry, triangle rectangle en r

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Meilleure réponse !
2014-03-24T23:13:34+01:00

CAH SOH TOA cos = adjacent/hypo   sin = oppose/ hypo   tg = oppose/adjacent

1) hypotenuse

rs²+rt²= st²

3,4²+5,6² = st²

11,56 + 31.36 = st²

42,92 = st²

st = √42.92

st = 6,55

2) angle S

cos S = 3,4/6,55 ≈ 0.52

angle S = 58°

3) angle T

cos T = 5,6/6,55 ≈ 0.85

angle T = 32°