sally282004 sally282004
  • 25-07-2022
  • Mathematics
contestada

sec^2x-2secx.cosx+cos^2x=tan^2x-sin^2x

Prove the identity

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flamingandfaded
flamingandfaded flamingandfaded
  • 25-07-2022

Hello.

sin²x + cos²x = 1

cos²x = 1 - sin²x

secx = 1/cosx

sec²x = tan²x + 1

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