Question

Help?

Answer 1

@waterineyes @tcarroll010

Answer 2

Is it english?

Answer 3

opps! no its not!

Answer 4

Can you still help me? I accidently posted it in the wrong spot

Answer 5

It is okay but be careful next time..

Answer 6

ok! Can you help though

Answer 7

\[\cos(\frac{3\pi}{4}) = \cos(\pi - \frac{\pi}{4}) \implies -\cos(\frac{\pi}{4}) = ??\]

Answer 8

is it -1/sqrt2

Answer 9

Tell me what is :

\[\cos(45^{\circ}) = ??\]

Answer 10

Yep you are right..

Answer 11

Now sin part is same with no - sign there..

\[\sin(\pi - \frac{\pi}{4}) \implies \sin(\frac{\pi}{4}) = ?\]

Answer 12

1/sqrt2

Answer 13

So which answer choice it is??

Answer 14

I dont know the values dont match.. Which is it?

Answer 15

\[-\frac{1}{\sqrt{2}} \;\; is \;\; same \; \; as \; \; -\frac{\sqrt{2}}{2}\]

Answer 16

oh!

Answer 17

so it is C?

Answer 18

There just Rationalizing has been done by \(\sqrt{2}\) by multiplying the numerator and denominator..

Answer 19

Yep..

Answer 20

can you help with 2 more please!

Answer 21

Go ahead..

Answer 22

here it is!

Answer 23

Use:

\[Angle = \frac{Arc \; \; Length}{Radius}\]

Answer 24

So:

\[s = Radius \times Angle\]

Answer 25

ok so s/5

Answer 26

s=(5)(2pi/3)

Answer 27

like this?

Answer 28

Something wrong where is pi in the answer choices wait..

Answer 29

s=10pi/3

Answer 30

I dont know

Answer 31

Wait..

Answer 32

ok

Answer 33

so.. I had an idea

Answer 34

Yes we are right..

10pi/3.

Solve this further using calculator..

Answer 35

\[Use \; \; \pi = 3.14\]

Answer 36

when you times 10 times pi you get 31..... divide that by 3 and round

Answer 37

Yep you are right.

A..

Answer 38

yay!

Answer 39

Another??

Post it fast..

Answer 40

here it is

Answer 41

Did not get it properly but: