Question

solve each triangle described below using Δ ABC :

1)a = 10, A = 16°, B = 49°

2)a = 8, b = 7, A = 88°

I don't know how to do this i forgot ... could u help (Steve, or Mrs.Sue, or Writeteacher plz help) this topic is Oblique triangle

Answer 1

I just did this one:
http://www.jiskha.com/display.cgi?id=1420462410

for #2.
using the sine law:
sinB/7 = sin88/8
sinB = 7sin88/8 = .8744...
angle B = 60.98° or angle B = 119.18° using the CAST rule

case1: B = 60.98, A = 88 , then C = 180-88-60.98 = 31.02°
or to the nearest angle:
A = 88 , B = 61, C = 31

Case2: B= 119, A =88 , then C = 180-119-88 = -27
But that would be "silly", so there is only the case1 answer.

Answer 2

thank you so much !! :)