Question

Solve for all missing sides and angles.

Answer 1

i know angle b is 120 but i do i find other sides

Answer 2

do you know the law of sines?

Answer 3

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

Answer 4

thats the formula but im confused with how to solve mostly

Answer 5

@sylbot

Answer 6

Ah, an obtuse triangle

Answer 7

ok so to find the rest of the sides, just plug and chug.
to find the side across the 15 degree angle just solve
sin(15)/x=sin(120)/200

Answer 8

to solve the other one, plug in the respective angle and solve for x (or whatever you assign to the side :P).

Answer 9

\[\sin15/x=\sin120/200 \]

Answer 10

\[\sin15=\sin120/200\]

Answer 11

is this right so far? @sylbot

Answer 12

which i got \[0.26\times \sqrt{3}/400=0.0011\]

Answer 13

i did something wrong

Answer 14

where did the x go? haha just do it like normal algebra.

Answer 15

so i cross multiply im guessing