Question

Given a= 200 and angle A=120 , angle B=30 , what does c= ?

Answer 1

SOLUTIONS

C = 180 - (120 + 30) = 180 - 150 = 30 degree

Using sine rule formular

`(a)/(sinA)=(b)/(sinB)=(c)/(sinC)`

a = 200 , A = 120 , C = 30, c = unknown

`\begin{gathered} (200)/(sin120)=(c)/(sin30) \\ c=(200sin30)/(sin120) \\ c=115.47 \end{gathered}`

Therefore the value of side c = 115.47