8.9 because I used a calculator
Answer:
Step-by-step explanation:
The angle of 2 is 75 degrees.
Angle 1 = 180 - 75 = 105 degrees
Im guessing 3 i really dont know.. i dont understand what it means by 4 channels.
Answer:
x=−7/2,−1+i√2−1−i√2
Step-by-step explanation: