Question

What are all the missing parts in the triangle below?

http://curriculum.kcdistancelearning.com/courses/GEOMx-HS-A09/b/assessments/R-LawofSinesShortAnswerQuiz/Geometry_8.4.9_Quiz_FINAL_10q.gif

Answer 1

use the sine law or cos law

Answer 2

I cant figure out which number goes where

Answer 3

u can only use cos law when you know the length of 2 side and the angle between them. this isn't the case here. you'll want to use sine law.

a/sinA = b/sinB = c/SinC.

a is the side opposite to the angle A, b is opposite to B and c to C.

in this one you'll need to find the angle you don't have, then find the remaing angle knowing that the angles of a triangle add up to 180. let me know if you would like more help for this question. :)

Answer 4

22/sin(87)?

Answer 5

@Euler271

Answer 6

22/sin(87) = 12 / sin (theta)

Answer 7

once you find theta then you can do 180 - 87 - theta to get the last angle

Answer 8

sin (theta)=.5447

Answer 9

assuming its right, theta = \[\sin^{-1} (0.5447)\]

Answer 10

what do i do with that