How do I find angles a, b, and c?

Mathematics

2 answers:

Monica [59]2 years ago

8 0

A. is supplementary to 130 so its 50.
50+90=140
180-140=B
B=40
60,B,C are supplementary so c=80

LenaWriter [7]2 years ago

6 0

For angle A, you need to do 180-130 which is 50
for angle B, you need to do 180- 90 - 50 which is 40
for angle C, you need to do 180 - 60 - 40 which is 80

If you want me to explain you with further details with how exactly I got those answers and how I knew what to do, then ask me.

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_____

A graphing calculator is useful for seeing if any of these values actually are roots of the equation. (The 4th-degree equation will have 2 complex roots.)