Question

Rewrite with only sin x and cos x.

cos 2x + sin x

Answer 1

cos 2x=2 cos^2 x-1

Answer 2

cos 2x= co(x+x)= cos x cos x - sinx sin x

Answer 3

i think it is 1 +3 sin^2x

Answer 4

cos 2x= co(x+x)= cos x cos x - sinx sin x
=1- 2 sin^2 x
= 2 cos^2x -1

Answer 5

there are 3 different formulas for cos 2x,use any to bring it in the form of sin x and cos x
then there will be 3 equivalent answers.

Answer 6

cos2x=2sinxcocsx
2sinxcosx+sinx=sinx(2cosx+1)

Answer 7

so what would the anserw be?

Answer 8

1 + 2 sin^2x + sin x

Answer 9

if u have choices, list them
else any of the 3 answers are correct
1-2sin^2 x+sin x

Answer 10

A1 + 3 sin x

B1 + 3 sin2x

C1 - 2 sin^2x + sin x

D1 + 2 sin^2x + sin x

Answer 11

2cos^2x -1+sin x
and
cos^2 x-sin^2x +sin x

Answer 12

C matches.

Answer 13

THANKS SO MUCH

Answer 14

welcome :)

Answer 15

cos^2x-sin^2x+sinx=1-sin^2x-sin^2x+sinx=1-2sin^2x+sinx

Answer 16

babydoll u can understant that?

Answer 17

yes

Answer 18

ya ok