Question

When solving a simple trigonometric equation, first isolate the trigonometric function, and then determine the values for the _________ itself...?

*adding another in progress*

Answer 1

I guess they are looking for variable...
that is how I would solve something like tan(theta)+1=0
isolate the trig function tan(theta)=-1
then find theta such that the equation is true...

Answer 2

Okay
- internet is being almighty lag-monster today, sorry -

Answer 3

That's not an option, these are the options http://prntscr.com/987w9m

Answer 4

only one of those make sense

Answer 5

what is your guess from the choices

Answer 6

If I asked you to evaluate tan(45 deg)
what is 45 deg
what does degrees measure ?

Answer 7

"angles" is wrong

Answer 8

oh that was the only option that made sense :p

Answer 9

submitted that before and was told it was incorrect, so I put this up here since I wouldn't know any other answer besides y-coordinate and trig function (both of which were marked wrong apparently)

Answer 10

ok well you said there was another question?

Answer 11

and this was the exact thing that was on your thingy right:
"When solving a simple trigonometric equation, first isolate the trigonometric function, and then determine the values for the _________ itself...?
"

Answer 12

sorry OS literally lag-crashed

Answer 13

There is but my internet's being laggy and OS is worse haha

Answer 14

http://prntscr.com/987xxt

Answer 15

well isolate the trig function first...
\[\sin(\theta)=\frac{\sqrt{2}}{2}\]
then whip out your unit circle and find when sin(theta) is sqrt(2)/2
also sin(theta) is the y-coordinate on the unit circle

Answer 16

so you are scanning the unit circle for the pairs (x,y)
where y is sqrt(2)/2

Answer 17

and giving me the angle that corresponds to that y

Answer 18

ALMIGHTY LAG
what
gimme a sec to read that lol

Answer 19

Oh, it can work like that?

Answer 20

0-0

Answer 21

are you having trouble?

Answer 22

there is two values in (0,360)
one is in the first quadrant
the other is in the 2nd quadrant such that y is sqrt(2)/2

Answer 23

45 degrees and
umm 180+45

Answer 24

180-45*

Answer 25

45 deg is right

Answer 26

135?

Answer 27

and 180-45 or 135 is right

Answer 28

Yay :]

Answer 29

so sin(theta)=sqrt(2)/2 when theta=45 or 135 deg

Answer 30

this is part b right

Answer 31

then you just add +360*k on to both of those
and you have all your solutions

Answer 32

oh okay

Answer 33

since sin has period 360 deg

Answer 34

http://prntscr.com/987zyo

Answer 35

???

Answer 36

I'm going to try this but I don't know if it will work http://prntscr.com/98804t

Answer 37

you know it says missing deg symbol right?
and also you didn't put the other solution to the first one

Answer 38

?

Answer 39

oh 135?

Answer 40

remember we got 45 and 135 for the second one
and all it is saying is that it wants you to put the deg symbol for that

and then for the first one I asked you to put +360k on to both
so you should have 45+360k and 135+360k

and yes since it is complaining about a deg symbol you will need to put one on 45 and 135 and 360

Answer 41

okay lol

Answer 42

or you can put it around (45+360k) and around (135+360k)

Answer 43

it just took off a point for the first question I posted
what the heck.

Answer 44

either my internet lagged or the site is stupid

Answer 45

http://prntscr.com/98819l

Answer 46

isolate the trig function

Answer 47

and do exactly what we did for the other one

Answer 48

yes but sin(theta)-3 I don't know how to solve

Answer 49

OH WAIT \[\frac{\sqrt{3}}{2}\]

Answer 50

wow that was dumb of me

Answer 51

do you know how to solve \[2y-\sqrt{3}=0 \text{ for } y?\]
yes add sqrt(3) on both sides
then divide both sides by 2

Answer 52

\[\sin(\theta)=\frac{\sqrt{3}}{2}\]

Answer 53

now again y is the sine value

Answer 54

30+360k, 150+360k?

Answer 55

those are both incorrect

Answer 56

when theta is 30 y is 1/2
when theta is 150 y is 1/2

Answer 57

when theta is ____ y is sqrt(3)/2
and
when theta is ____ y is sqrt(3)/2
y is the second number in the ordered pair

Answer 58

ugh I messed up pi/3 with ppi/6 sorry

Answer 59

pi*

Answer 60

so you mean 60 and 120?

Answer 61

yes

Answer 62

that would be correct

Answer 63

and please we learned from the last question it wants you to put in those degree symbols

Answer 64

lol ik

Answer 65

anyways peace
and good luck

Answer 66

sleepy time

Answer 67

alright thank you and good night :]