Question

Find the minimum value of x where sin(2x+45)=cos(30-x), using the factor theorem.

Answer 1

Factor theorem? Isn't this sum and difference formulae?

Answer 2

Yes. It's under the same name in Malaysia.

Answer 3

ima write it out on paper, too much typing >.> lol

Answer 4

\[cos(\frac{\pi}{2}-(2x+45))=\sin(2x+45)\]
so
\[\cos(\frac{\pi}{2}-(2x+45))=\cos(30-x)\]
\[\frac{\pi}{2}-(2x+45)=30-x\]

Answer 5

>.> too pro!

Answer 6

lol

Answer 7

i have to work today :(

Answer 8

sort of
i have to sit through a meeting that is forever

Answer 9

eewww meetings >.<

Answer 10

im gonna tell the high school I work at im putting in my two weeks.

Answer 11

poor high school
they need and love joe

Answer 12

myininaya meeting????
what job do you do?

Answer 13

psh, i wish they paid be like they loved and needed me lolol. Im trying to get a position at the college instead. so i can go to class and work in the same place

Answer 14

Small college..lol

Answer 15

all the best..
you can be online on your mobile though

Answer 16

Sounds like the high school I work at. or used to work at...i guess

Answer 17

USED TO?

Answer 18

its a "low-tier" high school, where over half the students struggle to pass standardized testing.

Answer 19

i want to put in my two weeks <.< lol
i want to tutor at the college instead.

Answer 20

Are you the reason for such results Joe?
lol!!

Answer 21

im the reason for good results! i work with kids with learning disabilities. i make them pro! lol

Answer 22

lol
obedient they are!

Answer 23

i dont tell me students about this site <.< i spend too much time here.....this is my away place lol

Answer 24

maybe i should change my pic....and my screen name.....then it would be ok lol

Answer 25

LOL

Answer 26

You guys like teaching?

Answer 27

then why do you do it?

Answer 28

i enjoy the act of teaching, i dont enjoy working as a teacher.

Answer 29

for a job? gotta pay those bills. There arent millions of jobs in the economy anymore, gotta take what you can get.

Answer 30

that is confusing joe
what you said?

Answer 31

oh Right

Answer 32

Like, what we do here, i enjoy, we are helping people, answering questions, and learning. Even if we arent getting paid, i enjoy this.

Answer 33

national science academy?

Answer 34

But working at a high school, theres too much regulation and rules, meetings, requirements. The administration is horrible. etc etc. its a drain to work.

Answer 35

oh cool

Answer 36

thats right myininaya

Answer 37

you guys are great..
hats off!

Answer 38

i want to be locked in a basement room. just number crunching. every couple of hours a small door will open and someone will toss in a 3 day old blueberry muffin.

Answer 39

dream job lol

Answer 40

LOL Cool job

Answer 41

myininaya you from US too?

Answer 42

cool!
all the best for the meeting

Answer 43

lol

Answer 44

there i deleted everything i said
so if anyone would had figured out my identity they can't now

Answer 45

lol, make it look like we were talking to ourselves!

Answer 46

lol

Answer 47

I'm stumped! thank you!!!!

Answer 48

\[\frac{\pi}{2}-(2x+45)=30-x \]
\[\frac{\pi}{2}-45-30=-x+2x\]
\[x=\frac{\pi}{2}-75\]
but your question says use the factor theorem ...

Answer 49

and somehow we need to find the minimal value for x

Answer 50

http://openstudy.com/groups/mathematics#/groups/mathematics/updates/4e42f1370b8b1fdcd4ba2081