Question

What is the simplified form of sin(x + p)?
a. cos x b. sin x c. –sin x d. –cos x

Answer 1

you may use below formula :
\(\large \sin (A + B) = \sin(A) \cos(B) + \cos(A) \sin (B)\)

Answer 2

seen that formula before ? :)

Answer 3

Look what the wind dragged in... looks like trigonometry woes :3

Still... you might want to make your presence felt there ^^

Answer 4

looks you're scared and ran away after seeing that evil formula :o
come back there is an easy way to do it :P

Answer 5

Onde está você?
<samba>

:3

Answer 6

Hi guysh... >.< I've never seen that formula before... lol ;-;
Um...
Does it look like this?
sin(x) cos(p) + cos(x) sin(p)

Why is Spanish being spoken lml >.<

Answer 7

Não é espanhol, é português.

Still though, does p mean \(\pi \) ?

Answer 8

okay im convinced... u didnt realize yet that u did ate some "pi" ?

it should be sin(x + pi) right ?

Answer 9

And lol, you plugged it in correctly, that's good ^^

Answer 10

o.o
I'm going to pretend I didn't see that xD

Um... it is a possibility but it looks exactly like this
What is the simplified form of sin(x + p)?
a. cos x b. sin x c. –sin x d. –cos x


It could be a mistake though... I've encountered so many mistakes throughout my course it's ridiculous. But it just says 'p' and

Ooooh yay c:

Answer 11

I don't like pi...e lol

Answer 12

The only way the choices would make sense is if p were \(\large \pi\)

Wouldn't you agree, ganeshie? :3

Answer 13

yess +1

Answer 14

Yeah... well, the only thing to do now, Angel (can I call you Angel?) is recall what exactly these values are:
\[\Large \sin(\pi) = \color{red}?\\\Large \cos(\pi ) = \color{red}?\]

Answer 15

Stuck?
Perhaps recalling the \(\large \pi\) corresponds to \(\large 180^o\) would help? ^^

Answer 16

Uhh.... now's not a good time to space out @AngelCriner :3

Answer 17

Sorry...... I was on Tumblr and the Cinnamon Rolls looked too amazing... I wanna cry ;-;
Yesh of course you may lol
But..
I'm a bit lost now >.<

Answer 18

Do I just plug that into the calculator?

Answer 19

Who needs to plug in? lol

Well, if you haven't memorised it by now, you'd do well to start.
\[\Large \sin(\pi) = 0\]\[\Large \cos(\pi ) = -1\]

Answer 20

Does that turn into

sin(x) (-1) + cos(x) (0)

Answer 21

That it does :P
So finally?

Answer 22

Angel... <snap> <snap>
You're almost there... don't die on me now ;)

Answer 23

lol ok so p= pi :3

Answer 24

Ooooh yay
SORRY
omg
>.<
>-\
Um..
I plugged sin(x) into mathway since I don't have a calculator and it just came out to be... sin(x) I don't think that's right e.e unless I wasn't supposed to do that...

Answer 25

Don't worry about sin(x)
Nobody knows what it is, just leave it be.

So...back to simplifying?
sin(x)(-1) + cos(x)(0)

Answer 26

sin -1x + cos x

Answer 27

lol what?
Nothing goes inside the sin()
-1 is multiplied to the whole sin(x) :P

Answer 28

\[\Large \sin(x+\pi) = (\sin x) (\cos \pi)+ (\cos x)(\sin \pi)\]

Answer 29

deleted lol it's ok
ummmm
I was told this

sin(x) (-1) + cos(x) (0)

-sin(x) + 0

-sin(x)


but where does the -1 go? I'm not seeing it...

Answer 30

OH WAIT

Answer 31

Waiting for you to arrive at your realisation...

Answer 32

since sin was positive and it's now negative... is that where it went o.o

Answer 33

sin(x)

Answer 34

Yup. Precisely.
Very perceptive ^^

Answer 35

Eh... kinda slow actually lol... thank you >.<

Answer 36

So...any more trig you got?

Answer 37

If you don't mind helping I can tag you in a couple of posts lol

Answer 38

I'm bored... and we worked on permutations and combinations for about an hour and a half last night... do I look like I mind helping? XD

Answer 39

XD I suppose... Point taken... Glad I can assist you in your boredom lol thank youuuu