Respuesta :

Answer:

1) Sin 36= a/25

a=25 sin 36

a= 14.69

Cos 36= b/25

b= 25 Cos 36

b= 20.23

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2) Sin 43= y/25

y= 25 sin43

y= 17.05

Cos 43= x/25

x= 25Cos 43

x= 18.28

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3) s= 42.58

  r= 177/Cos 20

  r= 124.51

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hope it helps...

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