Question

A beam rests against a wall, forming a 50° with the floor. Use the function y = 9 sec θ to find the length of the beam to the nearest tenth of a foot.

Answer 1

Ok

Answer 2

just imput the value of 50 into the equation and hit on the calculator and walah it gives it to you exactly unless you need it in radians.

Answer 3

do you need radians or degrees?

Answer 4

hit on the calculator... too bad it probably doesn't have sec in it... so... Geogebra? lol
or should we just take the *reciprocal of cosine*?

;)

Answer 5

so i take the reciprocal of cos50?

Answer 6

That is correct... and then multiply it by 9 :)

Be careful, though, and heed @magbak

DO make sure that your calculator is set to DEGREES and not RADIANS... or we might face some... complications ;)

Answer 7

Ok so you can take the reciprocal of cosine and then you multiply by 9.

Answer 8

I ment you beat me to it.

Answer 9

So in the end you do need to use the calculator.

Answer 10

ok im so stumped right now How do i find the reciprocal of cos 50? o.o

Answer 11

Input
\[\Large \frac1{\cos(50^o)}\]

Answer 12

i tried that and it came out weird

Answer 13

They usually do... what comes out?

Answer 14

he alwayse beats me to it

Answer 15

You've got to type faster, old timer :P

Answer 16

i got 1.55

Answer 17

it come out to be 1.555

Answer 18

That's right, alley... Why are you so scared of weird numbers? :D

Answer 19

Even \(\large \pi\) is a weird number :D

Answer 20

it is 3.14157124

Answer 21

No it isn't D:
It's
3.1415926535897932384626433832795028841...
XD

Answer 22

So 14.001 would be the length of the beam?

Answer 23

Ill let him answer this one

Answer 24

Yes, Alley, you got it ;)

Answer 25

Thanks guys :)

Answer 26

No prob

Answer 27

Only 10 more i need help with xD but if you dont want to its cool

Answer 28

no ill help you as much as you need bae