Question

Find x to the nearest tenth. Consult the table above to find the cosine number.

Answer 1

using the same table I'm guessing?

Answer 2

yes

Answer 3

cos(angle) = adj/hyp

cos(55) = x/223

223*cos(55) = x

x = 223*cos(55)

Now use the table to find cos(55) and use it to finish up

Answer 4

theres no number that says 55. are u sure thats what you mean

Answer 5

find where the angle is 55 degrees (it's on the right side)

Answer 6

then in that same row, use it to find cos(55)

Answer 7

.5376

Answer 8

good

Answer 9

cos(angle) = adj/hyp

cos(55) = x/223

223*cos(55) = x

x = 223*cos(55)

x = 223*0.5736

x = 127.9128

Answer 10

oh remember to round to the nearest tenth

Answer 11

.128

Answer 12

no

Answer 13

not nearest whole number

Answer 14

13

Answer 15

127.9128 to the nearest tenth is?

Answer 16

127.92

Answer 17

closer, but no

Answer 18

127.10

Answer 19

x = 127.9128 rounds to x = 127.90 or just x = 127.9 when you round to the nearest tenth

Answer 20

I'd go with x = 127.9 since that's easier

Answer 21

ok thannks. i was never taught how to round well, so excuse me for that

Answer 22

no worries, you can learn more about rounding at the following links

http://www.aaastudy.com/est27ax2.htm

http://www.purplemath.com/modules/rounding.htm

http://www.webmath.com/k8round.html


Some even have an interactive portion (to quiz you and you can use it as a calculator)

Answer 23

thanks...... i will be posting a couple more questions so please try to stay tuned