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meyruhstfu94

  • 4 years ago

verify the identity: cos x+sin x tan x=sec x

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  1. meyruhstfu94
    • 4 years ago
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    nvm got it!

  2. slaaibak
    • 4 years ago
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    LHS: cos x + sin^2 x/cos x = (cos^2 x + sin^2 x)/cos x = 1/cosx =sec x

  3. Aditi-Meow
    • 4 years ago
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    sinx tanx = secx -cos x =(1/cosx)-cosx =(1 - cos^2x)/cosx = (sin^2x)/cosx = sinx sinx/cosx = sinx tanx

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