I hope this helps you
a)
sin55=0.81=x/15
x=15/0.81
x=18.5
b)
tan27=0.50=x/20
x=20/0.50
x=40
Step one- distribute
6y-9=27
Step 2- subtract 9 on both sides
6y=18
Step 3 divide on both sides
Y=3
Answer: c
Step-by-step explanation:
Tan(Angle) = Opposite leg / Adjacent leg
Tan(A) = 5/7
A = Arctan(5/7)
A = 35.54 degrees.