Question

Find the exact value by using a half-angle identity.
sin (7π/8)

Answer 1

@precal

Answer 2

@Hero

Answer 3

@Lukecrayonz, you're the one who works for tutoring company.

Answer 4

Well I sure don't....

Answer 5

We don't tutor high levels anymore=[ And I've only finished precalc lol

Answer 6

@Hero thats why I called my hero.

Answer 7

Just pick an appropriate half angle identity and apply it to the problem.

Answer 8

Easier said than done.

Answer 9

Switch said and done

Answer 10

Or you could explain it to me.

Answer 11

I'm still waiting on OS to install a donate button for answering peoples questions

Answer 12

Are you familiar with these formulas?
@AFleming42
http://www.freemathhelp.com/images/halfangles.png

Answer 13

sorry hate half angles

Answer 14

@saifoo.khan Have I seen them? Yes. Do I understand how the heck to use them? No....

Answer 15

I agree with AFleming42, same thing here (see them, maybe done them correctly)

Answer 16

The formula requires the values of angles divided by 2.

See here: