Question

Hey i need help please?it in the comment teacher give me this work sheet and i'm new didnt go over this at the old school i hate this teacher so much. this is a grade :(

Answer 1

so you need to find one of the other sides of the triangle... to do this you need to use trig.. specifically SOHCAHTOA so seeing that from the angles perspective we have the adjacent side we can do cos70=1.3/x then simplify from there to get opposite side. then use TOA or Tangent= opposite over hypotenuse to get the hypotenuse of the triangle:P

Answer 2

Quentin2112 you are correct in saying that cos(70) = 1.3/x

but you don't need to use tangent since tan = opp/adj

Answer 3

oh your right thats my fault:P

Answer 4

im lost

Answer 5

have you learned about "SOHCAHTOA" ?

Answer 6

no

Answer 7

what math are you in?

Answer 8

its called math 1

Answer 9

if not, it's a shortcut to remember the trig ratios

SOH = sine, opposite, hypotenuse
CAH = cosine, adjacent, hypotenuse
TOA = tangent, opposite, adajcent

Answer 10

in this triangle, you need to find the hypotenuse x

Answer 11

so i dived 1.3 and x?

Answer 12

do you have a calculator? if so, then what is cos(70) equal to?

Answer 13

im lost is it 7 and 10?

Answer 14

no I'm asking you to use a calculator to evaluate the cosine of 70

if you have a TI calculator, you'd type cos(70). There is a "cos" button

Answer 15

.34

Answer 16

C? 3.8

Answer 17

@Directrix

Answer 18

sorry I was away for a moment

cos(70) = 0.34 is roughly correct

so,

cos(70) = 1.3/x

0.34 = 1.3/x

0.34x = 1.3

x = 1.3/0.34

x = 3.8235

Answer 19

ok so C

Answer 20

yeah roughly 3.8 miles

Answer 21

thank you :D

Answer 22

you're welcome