Question

Fan + Medal ...............

Answer 1

Solve for OP :-
\[\huge \sin \frac{\alpha}{2}=\frac{r}{OP}\]

Answer 2

Looks like you multiply both sides by OP and divide both sides by sin (a/2)

Answer 3

\[\huge OP \times \sin \frac{\alpha}{2}=r\]
then

Answer 4

@Kainui

Answer 5

divide both sides by sin (a/2)

Answer 6

\[\huge OP=\frac{r}{\sin \frac{\alpha}{2}}\]

Answer 7

then

Answer 8

You just solved for OP, what more could a girl ask for?

Answer 9

but this is not the answer

Answer 10

Remember you can not divide by 0, so put in the restriction sin(a/2) =/= 0.

Answer 11

i don't understand

Answer 12

Do you know that division by 0 is undefined?

Answer 13

yeah

Answer 14

So, since sin(a/2) is in the denominator of the fraction you cannot have it equal to 0, right?

Answer 15

OP needs to be by itself on one side.

Answer 16

right. @skullpatrol

Answer 17

actually these types of problems don't require a number as an answer. It's just manipulating and shifting terms.

Answer 18

What is the answer if that's not right?

Answer 19

there's a ton of it in Algebra II and some in Calc 2

Answer 20

oh!! @UsukiDoll so what is the answer??

Answer 21

in this type of problem...?. you need OP to be by itself on the left side.

Answer 22

@needforspeed You HAVE the answer. You want to solve for OP, you have a thing there that says EXACTLY what OP is equal to. You can't solve any more than that unless you want to plug something in.

Answer 23

it's like...I'll give an example from my algebra ii book one sec...

Answer 24

@Kainui but your answer doesn't matches with the original answer

Answer 25

What is the "original" answer? @needforspeed

Answer 26

Yeah exactly what I asked earlier lol.

Answer 27

aha! It's one of those solve each formula for the indicated variable probs.

Answer 28

Original answer :-
\[\huge OP=r cosec \frac{\alpha}{2}\]

Answer 29

its the SAME THING

Answer 30

How?? @YunoAkoRiko

Answer 31

1/sin(a/2) = cosec(a/2)

Answer 32

I'll draw an example of an easy one.