Question

Trig/ Law of Sine/ SSA / How does this have two angles?

Drawing coming up and details

Answer 1

a=7
b=5
A=70

I know how we get B, which is sin B 5sin 70 / 7 which is 42.20 but what or how to we get the second B ?

Answer 2

The line in the center is h

Answer 3

What do you mean by "second B"?

Answer 4

\( \frac{5\sin 70}{7} = B_1 = 42.20\)

Now they stat there is a \( B_2 = 137.80\) but I do not know where that is coming from

Answer 5

So you are looking for a reason why \(B_2 = 137.80\)?

Can you label \(B_2\)? Where is it in triangle you sketched?

Answer 6

that is not labeled.

Answer 7

They stat there are two angles for B 0 < B < 180

Answer 8

They stat there are two angles B 0 < B < 180, for which sin B = \(\frac{5\sin 70}{7} \)= 42.20

Answer 9

First angle is 42.20 how to find the other?

Answer 10

Ah I got it HAHAHA

Answer 11

That's good then. We don't know what second angle is referred to...

Answer 12

To find the other angle we do 180 - 42.20

Answer 13

That is how you get the second angle when doing SSA