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What is double angle formula of sine & cosine in terms of tan

What is double angle formula of sine & cosine in terms of tan

Grade:12

1 Answers

Mayank Ranka
askIITians Faculty 277 Points
2 years ago
Hi,
Here’s your answer

The double angle formulas of sin, cos, and tan are,
  • sin2A = 2 sin A cos A (or)(2 tan A) /(1 +tan2A)
  • cos2A = cos2A - sin2A (or) 2cos2A - 1 (or) 1 - 2sin2A (or) (1 - tan2A) /(1 +tan2A)
  • tan2A = (2 tan A) /(1 - tan2A)

Thanks
Regards
Ankit Gupta

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