Question

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Answer 1

you need to find the missing side... using the rule of cosines 1st.... before finding angles...

when you get the missing side... find 1 angle using the rule of sines.... then you can use angle sum of a triangle for the last angle...

hope it helps

Answer 2

ok... so pick and angle and use law of sines...

Answer 3

seems to make sense to me...

Answer 4

ok...

so

\[\frac{\sin(15)}{1.348}=\frac{\sin(B)}{3}\]

so

\[\sin(B) = \frac{3 \times \sin(15)}{1.348}\]

sin(B) = 0.576007

Answer 5

so B = 35.17 degrees

so the other angle is

180 - 35.15 - 15 = 129.85

Answer 6

here is an online triangle solver... just put in your information to check my solutions

http://nayuki.eigenstate.org/page/triangle-solver-javascript

Answer 7

it doesn't matter as long as you have the reciprocals of both...

Answer 8

and your book should also say

sin(A)/a = sin(B)/b = sin(C)/c