In quadrant I, when sin angle is 1/2, cos angle is (sqrt3)/2
<span>This is the term used to describe economic systems in which the basic economic questions are answered based on a socially, pre-established way.</span>
Answer:
Parte1 :
∡B= 180 - (42 + 83)= 55°
Parte2 :
Using the law of sines :
⇔
⇔ a= 142.95
Parte3 :
Using the same law :
or
⇔ c= 212.04
There’s tutors for math i just asked a tutor for help lol