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Sin inverse 8 by 17 + …

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Sin inverse 8 by 17 + Sin inverse 3 by 5 equals to Cos inverse 36 by 85
  • 1 answers

Prafulla Konwar 6 years, 5 months ago

At first you have to use 1st trigonometric identity to get cos x and y ,then apply cos(x+y) equal to get cos inverse 36 by 85.Ok......
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