Answer:
no 3
Step-by-step explanation:
using sine rule of trigonometry
a/sine A=b/sine B=c/sin C
two sides were given and one angle is also given
sides are represented by small alphabet
and angles are represented by capital letters
a=8.7
b=15
c=is not given
B=90
8.7/sine A=15/sine 90=c/sine C
then we use the complete one which is B to solve for the remaining
- solving for A
8.7/sine A=15/ sine90
cross multiply
15sine A=8.7*sine 90
15sineA=8.7*1
divide the by 15
sineA=8.7/15
sineA=0.58
A=sine -1 0.58
A=35.45
A=36
