<span>Sin (x) = Cos (90 - x)</span>
<span>sin(2A) = cos (90 - 2A)
=cos (3A)
90 - 2A = 3A
5A=90
A=18</span>
Answer:
about 65 percentage is the correct answer
Answer:

Step-by-step explanation:
-3
+ -8
equals;
-3
- 8
Putting it in improper function way:
-
=
= 
in simplified form equals 