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notka56 [123]
4 years ago
9

I need help with this

Mathematics
1 answer:
zepelin [54]4 years ago
4 0

Answer:

a  x = 14.9

b  x = 15.4

c x = 30.8

Step-by-step explanation:

a.  sin = opposite / hypotenuse

 sin 48 = x/20

multiply by 20

20 sin 48 = x

14.86 = x

to the nearest tenth

14.9


b  cos = adjacent/ hypotenuse

cos 39 = 12/x

multiply by x

x cos 39 = 12

divide by cos 39

x = 12/ cos 39

x = 15.44

rounding to the nearest tenth

x = 15.4


c  tan = opposite/adjacent

tan 64 = x/15

multiply by 15

15 tan 64 =x

30.75 =x

rounding to the nearest tenth

30.8 =x

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