Answer:
Z = 45 degrees
Step-by-step explanation:
the angle is still an acute angle but it is not a right angle so it must be 45 according to my calculations. plz mark brainliest
The answer is
.
Solution:
Use algebraic identity: 
For example: 
Given expression
and
.
To multiply these equations.




Combine like terms together.



Hence the answer is
.
Answer:
80 degrees
Step-by-step explanatibecause its congruent to a suplementary angle