Question

Given ΔABC, m∠A = 50°, m∠B = 60°, and a = 7. Find b.

Answer 1

A) 5.4
B) 6.2
C) 7.9
D) 9.0

Answer 2

apply sine rule

Answer 3

\[\frac{ a }{ \sin A } = \frac{ b }{ \sin B } = \frac{ c }{ \sin C }\]

Answer 4

and how do I do that?

Answer 5

see as
\[\frac{ a }{ \sin A } = \frac{ b }{ \sin B }\]
u got the values of a, <A and <B
so u can find the value of sinA and sinB and plug in the equation and get b

Answer 6

C) 7.9?

Answer 7

good work :))

Answer 8

can you help me with one more?

Answer 9

ooops....i gtg get ready for college .,...post it though :)

Answer 10

apply cosine rule