Math, asked by manoj28052005, 2 months ago

If A +B+C=, then prove that
A
B
C
+ cos²
= 2 cos
2.
2
2
А
cos2
cog2
cos - sin
B C С
2 2
2

Answers

Answered by avanish08verma

1

Answer:

please clarify the question...

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