Math, asked by nikoleta2266, 10 months ago

2cos50°×cos70°-sin110°
2cos110°×cos10°+sin10°
cos2\pi /7+cos4\pi/7+cos6\pi/7

Answers

Answered by ghirivaasan10b
0

Answer:

wait 1 min. . . . . . . . . . . .

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