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write the formula of cos2x, please reply?

Rajiv kumar Prabhakar 1st Jun, 2021

Answer (1)

Palak kumari 1st Jun, 2021

Hey there,

Hope you are doing well these days!

Formulas of cos2x are:-

1. 1-2Sin²x

2. Cos²x-Sin²x

3. 2Cos²x-1

4. (1+tan²x)/(1-tan²x)

Hope this helps!

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