prove that CosA+CosB+CosC=1+4.SinA/2.SinB/2.SinC/2 || #TrigonometryUptoTransformations chapter#maths

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  1. Maths Tutorials Telugu•1.1M
  2. prove that CosA CosB CosC=1 4.SinA/2.SinB/2.SinC/2
  3. exercise 1a of circle inter
  4. inter maths
  5. inter functions exercise 1a
  6. circle chapter solutions for inter
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If A+B+C=180 degree, 0:06:44

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`cosA+cosB+cosC=1+4sin(A/2)sin(B/2)sin(C/2)` 0:07:42

`cosA+cosB+cosC=1+4sin(A/2)sin(B/2)sin(C/2)`

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