2.40 supplementary angle
3. 40 vertical angle of angle 2
4. 140 vertical angle of angle 1
5. 140 corresponding angle with angle 1
6.40 corresponding angle with angle 2
7. 40 alternate exterior angle with angle 2
8. 140 alternate exterior angle with angle 1
Answer:
1) x= 3i, x= - 3i
2) x= +i
, x = - i
Step-by-step explanation:
1) x^2+9=0
(x+3i)(x-3i)=0
x= 3i, x=-3i
2) x^2-4=-11
x^2=-7
x= ±i
x= +i
, x = - i
hope this helps!! :))
As the question points out, the equation is indeed separable:


Integrate both sides to get


Since a plane is 180 degrees total, x=135
180-45=135