Will mark ! giving 15 points!

urgent needed asap ! look at the photo and answer the following !
correct answers only !

find the measure of angle b.

question 1 options:
90
180
120
60

find the length of segment bc.

question 2 options:
163.3
128.6
84.7
59.8

find the length of segment ba.

question 3 options:
163.3
128.6
84.7
59.8

#1) Angle measure of B

The angles in a triangle should add up to 180. Since we know the other two angle measures, we can subtract it from 180. (180-45-15= Angle B)

Angle B= 120

#2) Length of segment BC

I would use the Law of Sines. So, sin120/200 = sin45/BC

Then cross multiply and divide.

Segment BC= 163.3

#3) Length of Segment BA

Again, I would use the Law of Sines. Same process, sin120/200 = sin15/BA

Segment BA= 59.8

i used to know but i learned it a long time ago sorry

step-by-step explanation: