Law of sines:
sin(a)/a = sin(b)/b = sin (c)/c

triangle abc has measures a = 2, b = 2, and m∠a = 30°. what is the measure of angle b?

a. 15°
b. 30°
c. 45°
d. 60°

1. perpendicular

2. parallel

3. perpendicular

graph b

step-by-step explanation:

one solution- graph a (clear intercepting point.)

no solution- graph b (they're parallel, there will never be a point of interception.)

infinite solutions- graph c (all points intercept.)