Question

Can the Double-Angle formula be used to find sin 22.5°? If so, show it.

Answer 1

@animal_lover36 @BATMAN31 @cupcake111 @gorv @iGreen please? Help?

Answer 2

Taking a timed test, i can help if you'll wait an hour.

Answer 3

u know double angle formula

Answer 4

sin2x=sin22.5

Answer 5

It's not a test. It's an assignment but I'd like it done as soon as possible. I have another class to do.
The formula I think I have to use is sin2x = 2sin x cos x?

Answer 6

2x=22.5
x=22.5/2=11.25

Answer 7

but we dont know the value of 11.25

Answer 8

So that's as far as it can go?

Answer 9

sin2x=2sinx*cosx=2*sin11.25*cos11.25

Answer 10

Is that solvable?

Answer 11

well it will be said solvalble if we use standard value ...so i say no

Answer 12

Okay well I appreciate it. :) I'll give you a medal for the help.