Question

a trigonometry question#5

given
tan x/2=y
find cos x/(1+sinx) in y term

Answer 1

tan(x/2)= sinx/(1+cosx)

Answer 2

Multiply numerator and denominator by (1-cosx)

Answer 3

That will lead you to a good place.

Answer 4

i'm not doing in that way. can you try and give me an anz

Answer 5

where is "tan(x/2)= sinx/(1+cosx)" from?

Answer 6

It's a half angle formula.

Answer 7

i got another way

Answer 8

just a sec

Answer 9

i think it can be written in several form

Answer 10

let me give you guy choices

Answer 11

scanning...

Answer 12

a.\[1-y^2/(1+y)^2\]

b.\[1-y^2/1+y^2\]
c.\[y^2-1/y^2+1\]
d. \[y^2-1/(y+1)^2\]

Answer 13

so we have
\[\frac{\frac{1-y^2}{y^2+1}}{1+\frac{2y}{y^2+1}} \cdot \frac{y^2+1}{y^2+1}=\frac{1-y^2}{y^2+1+2y}=\frac{1-y^2}{(y+1)^2}\]

Answer 14

after simplification

Answer 15

I really couldn't get it the way mert was doing
i found this way perfect though

Answer 16

can you real my pdf?

Answer 17

read*

Answer 18

yes same here thx