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a)
cos28°= x
_____------
______4
88____x
----- = -----
100___4
100x= 352
x= 352/100
x= 3,52 cm
b)
sen28°= x
______-----
_______5
46____x
----- = -----
100___5
100x= 230
x= 230/100
x= 2,3 cm
c)
tang28°=x
______ ----
_______10
53___x
---- = ----
100__10
100x= 530
x= 5,3 dm
cos28°= x
_____------
______4
88____x
----- = -----
100___4
100x= 352
x= 352/100
x= 3,52 cm
b)
sen28°= x
______-----
_______5
46____x
----- = -----
100___5
100x= 230
x= 230/100
x= 2,3 cm
c)
tang28°=x
______ ----
_______10
53___x
---- = ----
100__10
100x= 530
x= 5,3 dm
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