samriddhistudies samriddhistudies
  • 25-05-2021
  • Mathematics
contestada

express cos10A in terms of sin5A

Respuesta :

bhargavbhushan07
bhargavbhushan07 bhargavbhushan07
  • 25-05-2021

Answer:

1 - 2sin²5A

Step-by-step explanation:

cos10A = cos2(5A) = cos²5A - sin²5A = 1 - sin²5A - sin²5A = 1 - 2sin²5A

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