sarahcauser sarahcauser
  • 24-04-2017
  • Mathematics
contestada

(1-tanx)(1-cotx)=2-secxcscx

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Аноним Аноним
  • 24-04-2017
I hope this helps you


✔sin^2x+cos^2x=1


✔ 1-tgx=1-sinx/cosx=cosx-sinx/cosx


✔1-ctgx=1-cosx/sinx=sinx-cosx/sinx


secx=1/cosx


cosecx=1/sinx


(cosx-sinx)(sinx-cosx)/sinx.cosx


cosx.sinx-cos^2x-sin^2x+sinx.cosx/sinx.cosx

2.cosx.sinx-1/sinx.cosx


2.cosx.sinx/sinx.cosx-1/sinx.cosx


2-1/sinx.cosx


2-secx.cosecx


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