ilovejustinbieber20
ilovejustinbieber20
30-05-2017
Mathematics
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Helppppppp mathhhhhhhhh
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irspow
irspow
30-05-2017
cosα=adjacent/hypotenuse
In this case you have:
cosα=FE/DF
DF=FE/cosα, we are told that FE=13 and α=34 so
DF=13/cos34
DF≈15.68 which is
DF≈15.7 (to nearest tenth)
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