Question

If cos x = c, then sin^2 x/2 equals
(1) 1-c / 2 (3) 1-c / c+c
(2) 1+c / 2 (4) 1-c / 4

Answer 1

1

Answer 2

explanation please

Answer 3

So this is a given rule for trig but I can try to explain it

Answer 4

So \[\sin^2x = (1-\cos2x)/2\]

Answer 5

hint:
\[\sin^2(x)=1-\cos^2(x)\]

Answer 6

So given what I just posted when you make it x/2 you just divide all the x's in the thing by 2... So yeah it becomes 1-c/2 if you want more detail from how freckles get's his answer I can help with that too.

Answer 7

hiiii

Answer 8

Hello

Answer 9

I know Terius in real life :) I am the one asking for the help

Answer 10

Oh okay so do you get my explanation or not?

Answer 11

Yush and I understand it fully :3 thanks bae

Answer 12

Uhm no problem =)