Question

solve sinx+2sinxcosx=0 for 0 degrees ≤ x ≤ 180 degrees

Answer 1

sin x+2sinx cos x=sin x(1+2cos x )=0

implies sinx=0 or 1+2cos x=0
solve :)

Answer 2

Thank you c:

Answer 3

so sin0(1+2cos0) = 0?

Answer 4

not that way solve each separately

sin x=0

x=?

1+2cos x =0

x= ?

Answer 5

note that you need to report a general value in 0 degrees ≤ x ≤ 180 degrees

Answer 6

I don't get it :l

Answer 7

ok i will do first one

sin x=0

means x=0 or pi

Answer 8

oh >_<

Answer 9

can u do 2nd one ?

Answer 10

1+2cos(pi)?

Answer 11

first solve for cos x

Answer 12

Would it not be pi? :l

Answer 13

1+2cos x=0

cos x= ?

Answer 14

1?

Answer 15

so 1+2cosx=3?

Answer 16

............

Answer 17

No? >_<

Answer 18

I'm not good at these >_<

Answer 19

1+2cos x=0

cos x=?

Answer 20

Ohhhh 3 cuhs all of that equals 0?

Answer 21

cos x = 3 I mean

Answer 22

???

Answer 23

>_<

Answer 24

assume cos x=y

1+2y=0

y= ?

Answer 25

-1/2?

Answer 26

exactly !! well done :)

Answer 27

finally :P

Answer 28

lmao sorry I didn't get it cx

Answer 29

Well at first cx

Answer 30

So how would my final answer look? :l

Answer 31

COS X=-1/2

x= 120 degree or pi-pi/3

Answer 32

oh okai c: thank you c:

Answer 33

yw :)