Question

How to find the exact value of Sin(pi/4)?

Answer 1

\[\theta = \frac{ \pi }{ 4 }\]

Answer 2

hello

Answer 3

Think of the special triangle this is the triangle for pi/4 use your trig ratios

Answer 4

Is that a special triangle?

Answer 5

Yes

Answer 6

From unit circle

Answer 7

Is it, 1/rad2?

Answer 8

There's one for pi/4, pi/3 and pi/6 but you can also derive them using the unit circle or just remember it

Answer 9

Yup exactly

Answer 10

Sin=opp/hyp, 1/rad2

Answer 11

okei thankss

Answer 12

Np

Answer 13

excuse me, if it is asking for the exact value and 1/rad2 has a radical on the denominator, do I have to get rid of it by multiplying the numerator and denominator by radical 2?

Answer 14

You can it shouldn't really matter

Answer 15

\[\frac{ 1 }{ \sqrt{2} } = \frac{ \sqrt{2} }{ 2 }\]

Answer 16

Thanks