Hello,
Total sum : 315 + 280 + 390 = $ 985
$ 985 ÷ ( 3 × 7 ) = $ 985 ÷ 21 = $ 46,90
Bye :)
Answer:
Ask a freaking tutor like it's not that under your answer it will say ask a tutor
The correct answers are 0°, 120°, and 240°