Question

verify each identity

Answer 1

did you get it

Answer 2

its number 66

Answer 3

Show us your best attempt at trying to show it's true.

Answer 4

Do you have a formula in the book for cot(x/2)

Answer 5

no i dont, that's what's confusing me i dont know where to start

Answer 6

What is the reciprocal function of cotangent?

Answer 7

cos

Answer 8

No. Look at the attached chart.

Answer 9

What is the reciprocal function of cotangent?

Answer 10

tan

Answer 11

\[\sqrt{\frac{ 1-\cos \alpha }{ 1+\cos \alpha }}\]

Answer 12

What did you just post? Half angle for tangent or cotangent?

Answer 13

half angle for tangent

Answer 14

Because the tangent and cotangent are reciprocals, I would like to think that the cotangent of the half angle is the reciprocal of the expression you entered.

Answer 15

\[\sqrt{\frac{ 1+ \cos \alpha }{ 1-\cos}}\]

Answer 16

Let's aim for that. I think it can be rewritten in a simpler way.

Answer 17

how should i go about simplifying it?

Answer 18

Try rationalizing the denominator

Answer 19

\[\sqrt{\frac{ 1+\cos \alpha }{ 1-\cos \alpha }} (\frac{ 1-\cos \alpha }{ 1-\cos \alpha})\]

Answer 20

Radical symbol

Answer 21

yes

Answer 22

with the symbol

Answer 23

Did you get this far? (see attachment) I break up my square roots of a quotient to be the quotient of the square roots.

Answer 24

Multiply out the numerators and post what you get.

Answer 25

okay one moment

Answer 26

Incorrect move. One of those is a radical. The other is not. And, you cannot divide them out.