Question

In ΔABC, m 12 years ago

Answer 1

SinB=22
SinC=52
a=30

22/b = 52/30

crossed multiplied and got 660 for SinB
for b i got 52b.
is 52 b my answer?

Answer 2

-1 >= sin (theta) >= 1 so.... sin b = 22?

Answer 3

I would point out that your problem statement doesn't give you 'c' it only gives you 'a', so you would need to calculate the angle A and then use your law of sines to get 'b'

Answer 4

12.69 would be my answer after dividing 660/52

Answer 5

Yes. That's the ticket. Law of Sines. Do you know that one autumnpoteet?

Answer 6

Slowly getting it haha.

Answer 7

180 - (22+52) = A

Answer 8

\[\frac{a}{\sin{A}}=\frac{b}{\sin{B}}\]

Answer 9

it gives me A already. why would i need a when im looking for b?

Answer 10

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

Answer 11

No, it gives you side 'a', you need angle 'A'

Answer 12

so I am completely wrong? i was thinking of my last question hahah sorry.

Answer 13

For the law I just typed the secret is 1) get a pair of angle and side with the same letter and 2) pick a "fraction" for the other side of the proportion which contains the unknown you want.

Answer 14

i give up

Answer 15

A = 106

Answer 16

Angle A is 106. Now you know Angle A, side a (one fraction) and you know angle B (half of the fraction) (sin B / b). You can set a proportion now. Remember your numbers are sines of the angle measures, not the measures themselves.