Answer:
Pronoun
A pronoun is a word used to stand for a noun
Answer:
57.5 degrees
Step-by-step explanation:
Assuming this is a triangle
a is adjacent is ∠B
b is opposite of ∠B
Use the inverse tangent equation: 
This equals to 57.52880771
X^2 -61 =20
X^2= 81x =9 x=-9
1/2 because you can simplify 4/8 and do 4 divided by 4 and 8 divided by 4 which is 1/2