Cos (𝟐𝜶+10°). Cosec(𝜶-40°) = 1 है, तो 𝜶 का मान क्या होगा?

  • 1

    𝟒𝟓°

  • 2

    𝟑𝟎°

  • 3

    𝟒𝟎°

  • 4

    60°

Answer:- 3

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