Question

what is the value of sin45 degree and cos 45 degree??
i think sin45= 1/underroot 2 and cos45=1/underroot 2 but open the link below here is what value??

Answer 1

yes you are right

Answer 2

there are three ways to write the answer
one is
\[\sqrt{\frac{1}{2}}\] the square root of one half
you never see that

Answer 3

the other is
\[\frac{1}{\sqrt2}\] which you sometimes see
same thing

Answer 4

mostly you see it with the denominator rationalized as
\[\frac{\sqrt2}{2}\]

Answer 5

yes but is it wrong?

Answer 6

they are all the same number

Answer 7

how?

Answer 8

@mathmath333

Answer 9

@myininaya

Answer 10

http://openstudy.com/study#/updates/53fb78d5e4b0010fcd98fc6e

Answer 11

how is it the same number?

Answer 12

@mathmath333 and @satellite73 if both has same values then can i use always \(\dfrac{1}{sqrt2}\)

Answer 13

yes