Question

I need help!
Solve for triangle ABC:

1. a = 28, b = 15, 13 years ago

Answer 1

(1). use the law of sines to get the measure of angle B
asin(B) = bsin(A)
sin(B) = bsin(A)/a
sin(B) = 15 sin(110)/28
sin(B) = ....
then take arc(sin) to get the measure of angle B
(dont forget use the calculator)

Answer 2

Alright, thank you!

Answer 3

but that's not clear yet, you need the measure of angle C, and then determine the length of c

Answer 4

after you get <B, to get <C use the property of the sum of interior angles in a triangle is 180 degrees.
A+B+C = 180
so, C = 180 - (A+B)

Answer 5

and to get the length of side c, you can use the law of sines or the law of cosines.

Answer 6

c^2 = (a^2 + b^2 - 2 ab cos(C)
solve for c