Question

Write an equation that could be used to find the value of y.
answers:
sin 94/52 = sin72/y
sin94/y = sin72/52
sin14/52 = sin72/y
sin 94/y = sin 72/52

Answer 1

i think its the third one

Answer 2

The third one as in

sin 14/52 = sin 72/y

?

Remember that the law of sines states that

\[\frac{ Sin A }{ a } = \frac{ Sin B }{ b } = \frac{ Sin C }{ c }\]

So you want to find one pair of angle / side that are already solved...like for example here...you have ANGLE X...and SIDE X...so that would be a good start

\[\frac{ Sin 94 }{ 52 } = \frac{ Sin B }{ b }\]

Now you want to solve for side Y so you want to take ANGLE y...and use side y in the comparison

\[\frac{ Sin 94 }{ 52 } = \frac{ Sin 72 }{ y }\]

Make sense?

Answer 3

yeah a little hah

Answer 4

i thought it was the third one because your just finding the equation so i just subtracted the measures from 180

Answer 5

Ohh...no this is a Law of Sines question...

*more can be read here*

http://www.mathsisfun.com/algebra/trig-sine-law.html

it is a good website to look at for this ...and this would be the method used to find missing side or angle lengths of triangles

Answer 6

ohh yeah i know that its a law of sines question hah im just confused on how the equation is supposed to look like

Answer 7

so its the first one then ?