What are the approximate values of the missing side lengths in the triangle below? BC=~136m, AB x 89 m
BC=~89 m, AB, 136 m
BC =~ 106 m, ABx 162m
BC =~162m, AB x 106m

i believe it's a.

i'm not sure on this one, most likely correct.

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92